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Vitamin D is essential for bone health, immune function and overall wellbeing. And it becomes even more crucial as we age.
New guidelines from the international Endocrine Society recommend people aged 75 and over should consider taking vitamin D supplements.
But why is vitamin D so important for older adults? And how much should they take? Young people get most vitamin D from the sun
In Australia, it is possible for most people under 75 to get enough vitamin D from the sun throughout the year. For those who live in the top half of Australia – and for all of us during summer – we only need to have skin exposed to the sun for a few minutes on most days.
The body can only produce a certain amount of vitamin D at a time. So staying in the sun any longer than needed is not going to help increase your vitamin D levels, while it will increase your risk of skin cancer.
But it’s difficult for people aged over 75 to get enough vitamin D from a few minutes of sunshine, so the Endocrine Society recommends people get 800 IU (international units) of vitamin D a day from food or supplements.
Why you need more as you age
This is higher than the recommendation for younger adults, reflecting the increased needs and reduced ability of older bodies to produce and absorb vitamin D.
Overall, older adults also tend to have less exposure to sunlight, which is the primary source of natural vitamin D production. Older adults may spend more time indoors and wear more clothing when outdoors.
As we age, our skin also becomes less efficient at synthesising vitamin D from sunlight.
The kidneys and the liver, which help convert vitamin D into its active form, also lose some of their efficiency with age. This makes it harder for the body to maintain adequate levels of the vitamin.
All of this combined means older adults need more vitamin D.
Source: https://indianexpress.com/article/lifestyle/health/if-you-are-over-75-heres-what-you-need-to-know-about-vitamin-d-9619445/?utm_source=pocket-newtab-en-intl
It was the United Nations that designated October 15 as a day to celebrate Dr Kalam’s birthday as World Students’ Day, symbolising his legacy and encouraging the values he championed.
“To succeed in life and achieve results, you must understand and master three mighty forces — desire, belief, and expectation.”
This famous quote is said by India’s 11th President, Dr APJ Abdul Kalam. His love and trust in the young generation of India and beyond is not hidden. Every year on October 15, the country and beyond celebrate, ‘World Students’ Day’ in honor of Dr APJ Abdul Kalam, who was a beloved teacher, and a scientist.
It was the United Nations that designated October 15 as a day to celebrate Dr Kalam’s birthday as World Students’ Day, symbolising his legacy and encouraging the values he championed.
Known as the ‘People’s President,’ Dr Kalam dedicated much of his life to inspiring and guiding young students, and his passion for teaching and learning left a profound impact on India and beyond.
He was known for his humility, his belief in the potential of the younger generation, and his advocacy for science and education as pathways to national development.
Dr Kalam was born on October 15, 1931, in a Tamil Muslim family in Rameswaram on Pamban Island. Pamban Island was then in the Madras Presidency and is now in Tamil Nadu. Although Dr Kalam had average grades in his school years, he was always a bright and hardworking student with a strong desire to learn. He spent hours on his studies, especially mathematics.
Dr Kalam received numerous awards, including the Padma Bhushan in 1981, the Padma Vibhushan in 1990, and the Bharat Ratna for his contributions to research, the field of science, and his work with the Indian Space Research Organisation (ISRO) and the Defence Research and Development Organisation (DRDO).
Source: https://indianexpress.com/article/education/world-students-day-2024-why-is-october-15-celebrated-as-students-day-apj-abdul-kalam-9619414/?utm_source=pocket-newtab-en-intl
“To succeed in life and achieve results, you must understand and master three mighty forces — desire, belief, and expectation.”
This famous quote is said by India’s 11th President, Dr APJ Abdul Kalam. His love and trust in the young generation of India and beyond is not hidden. Every year on October 15, the country and beyond celebrate, ‘World Students’ Day’ in honor of Dr APJ Abdul Kalam, who was a beloved teacher, and a scientist.
It was the United Nations that designated October 15 as a day to celebrate Dr Kalam’s birthday as World Students’ Day, symbolising his legacy and encouraging the values he championed.
Known as the ‘People’s President,’ Dr Kalam dedicated much of his life to inspiring and guiding young students, and his passion for teaching and learning left a profound impact on India and beyond.
He was known for his humility, his belief in the potential of the younger generation, and his advocacy for science and education as pathways to national development.
Dr Kalam was born on October 15, 1931, in a Tamil Muslim family in Rameswaram on Pamban Island. Pamban Island was then in the Madras Presidency and is now in Tamil Nadu. Although Dr Kalam had average grades in his school years, he was always a bright and hardworking student with a strong desire to learn. He spent hours on his studies, especially mathematics.
Dr Kalam received numerous awards, including the Padma Bhushan in 1981, the Padma Vibhushan in 1990, and the Bharat Ratna for his contributions to research, the field of science, and his work with the Indian Space Research Organisation (ISRO) and the Defence Research and Development Organisation (DRDO).
Source: https://indianexpress.com/article/education/world-students-day-2024-why-is-october-15-celebrated-as-students-day-apj-abdul-kalam-9619414/?utm_source=pocket-newtab-en-intl
According to LinkedIn’s ‘Jobs On The Rise 2024’ report, ‘Sustainability Manager’ is one of the top 25 most sought-after roles in India.
New Delhi: Shiny, brand-new red benches that popped up one day in Delhi University’s North Campus led 20-year-old Sneha Chopra to a career in environment. Initially thinking they were a PR stunt by a brand, Chopra, then a zoology student at Khalsa College, ignored them. But then she saw that these benches, installed by Zomato, were made of 100 per cent recycled plastic waste as part of a sustainability campaign.
“It was my first time seeing a company take concrete action for the environment, and I realised there’s so much scope for sustainable action in the corporate world,” said Chopra, who is now pursuing a master’s degree in Environmental Studies and Resource Management from The Energy and Resources Institute (TERI) in Delhi. She wants to graduate and work as a sustainability manager for a big corporation like Zomato, helping reduce their carbon footprint.
Chopra is one of the many new ‘climate aspirants’ in India – she wants a career working in the climate action sector, and the avenues to choose from seem endless. LinkedIn’s Jobs on the Rise 2024 report named ‘Sustainability Manager’ as one of the top 25 most sought-after roles in India. Climate change has permeated every sector and industry, from environmental, social, and governance (ESG) consulting and environment law to climate agriculture science and renewable energy policy. Colleges are perking up at the opportunity, introducing new courses on climate sciences. Companies, on the other hand, are offering workshops on sustainability to their employees.
Source: https://theprint.in/ground-reports/climate-action-is-hot-new-career-consultancy-communications-colleges-all-in/2310166/?utm_source=pocket-newtab-en-intl
New Delhi: Shiny, brand-new red benches that popped up one day in Delhi University’s North Campus led 20-year-old Sneha Chopra to a career in environment. Initially thinking they were a PR stunt by a brand, Chopra, then a zoology student at Khalsa College, ignored them. But then she saw that these benches, installed by Zomato, were made of 100 per cent recycled plastic waste as part of a sustainability campaign.
“It was my first time seeing a company take concrete action for the environment, and I realised there’s so much scope for sustainable action in the corporate world,” said Chopra, who is now pursuing a master’s degree in Environmental Studies and Resource Management from The Energy and Resources Institute (TERI) in Delhi. She wants to graduate and work as a sustainability manager for a big corporation like Zomato, helping reduce their carbon footprint.
Chopra is one of the many new ‘climate aspirants’ in India – she wants a career working in the climate action sector, and the avenues to choose from seem endless. LinkedIn’s Jobs on the Rise 2024 report named ‘Sustainability Manager’ as one of the top 25 most sought-after roles in India. Climate change has permeated every sector and industry, from environmental, social, and governance (ESG) consulting and environment law to climate agriculture science and renewable energy policy. Colleges are perking up at the opportunity, introducing new courses on climate sciences. Companies, on the other hand, are offering workshops on sustainability to their employees.
Source: https://theprint.in/ground-reports/climate-action-is-hot-new-career-consultancy-communications-colleges-all-in/2310166/?utm_source=pocket-newtab-en-intl
Scientists are concerned that the Atlantic Ocean’s system of currents may be about to reach a tipping point. If it does, it’ll have severe consequences for all of us.
Icy winds howl across a frozen Thames, ice floes block shipping in the Mersey docks, and crops fail across the UK. Meanwhile, the US east coast has been inundated by rising seas and there’s ecological chaos in the Amazon as the wet and dry season have switched around… The world has been upended. What’s going on?
While these scenes sound like something from a Hollywood disaster movie, a new scientific study investigating a key element of Earth’s climate system – the Atlantic Meridional Overturning Circulation (AMOC) – says this could occur for real as soon as 2050.
So what is it and why is it important? Are such catastrophic events, like those mentioned above, likely to happen if it disrupted, and what – if anything – can we do about it?
Why the AMOC matters and what's changing
The AMOC – often called ‘the great ocean conveyor’ – is a large system of ocean currents that includes the Gulf Stream. It circulates warm, salty water from the tropics northward into the North Atlantic, where
it cools and becomes denser. As this water cools, it sinks and flows back southward at deeper levels, before eventually rising back to the surface throughout the rest of the ocean, creating a continuous loop
of circulation.
It transports vast amounts of heat around the Atlantic – equivalent to boiling about a thousand billion kettles. It’s responsible for 25 per cent of the total heat flowing into the northern hemisphere by the ocean and atmosphere. This heat warms the winds that blow in off the Atlantic over Northwest Europe, contributes to the relatively mild climate these regions experience and helps to stop Arctic sea ice from spreading down beyond Norway.
But its effects are felt more globally, too. If the AMOC gets weaker and causes the northern hemisphere to cool, all the climate belts of the world – including the equatorial rainfall belt – will be shifted further south.
It is therefore a key component of the stability of the global climate system. As global warming continues, the surface of the high-latitude North Atlantic is getting much warmer. It’s also getting fresher because of the melting of the Greenland ice sheet and Arctic sea ice, and due to increased precipitation. This makes the surface ocean less dense, which prevents it from sinking, in turn weakening this important climate system.
Changes in the location and strength of winds blowing across the ocean can also alter the AMOC. During the Ice Age, stronger winds led to a stronger Gulf Stream, helping strengthen parts of it. In the opposite case, a future warmer world, models predict that winds may contribute to a weaker AMOC.
Is it definitely changing?
Direct instrumental measurements of the strength of the AMOC only began in 2004, when the RAPID array was installed across the Atlantic. After nearly 20 years of continuous measurements, the data show a 10-per-cent decrease in its strength, but because the observations show such a lot of change from year to year, we can’t be sure that this is a meaningful, long-term decline.
Source: https://www.sciencefocus.com/comment/atlantic-current-collapse?utm_source=pocket-newtab-en-intl
Icy winds howl across a frozen Thames, ice floes block shipping in the Mersey docks, and crops fail across the UK. Meanwhile, the US east coast has been inundated by rising seas and there’s ecological chaos in the Amazon as the wet and dry season have switched around… The world has been upended. What’s going on?
While these scenes sound like something from a Hollywood disaster movie, a new scientific study investigating a key element of Earth’s climate system – the Atlantic Meridional Overturning Circulation (AMOC) – says this could occur for real as soon as 2050.
So what is it and why is it important? Are such catastrophic events, like those mentioned above, likely to happen if it disrupted, and what – if anything – can we do about it?
Why the AMOC matters and what's changing
The AMOC – often called ‘the great ocean conveyor’ – is a large system of ocean currents that includes the Gulf Stream. It circulates warm, salty water from the tropics northward into the North Atlantic, where
it cools and becomes denser. As this water cools, it sinks and flows back southward at deeper levels, before eventually rising back to the surface throughout the rest of the ocean, creating a continuous loop
of circulation.
It transports vast amounts of heat around the Atlantic – equivalent to boiling about a thousand billion kettles. It’s responsible for 25 per cent of the total heat flowing into the northern hemisphere by the ocean and atmosphere. This heat warms the winds that blow in off the Atlantic over Northwest Europe, contributes to the relatively mild climate these regions experience and helps to stop Arctic sea ice from spreading down beyond Norway.
But its effects are felt more globally, too. If the AMOC gets weaker and causes the northern hemisphere to cool, all the climate belts of the world – including the equatorial rainfall belt – will be shifted further south.
It is therefore a key component of the stability of the global climate system. As global warming continues, the surface of the high-latitude North Atlantic is getting much warmer. It’s also getting fresher because of the melting of the Greenland ice sheet and Arctic sea ice, and due to increased precipitation. This makes the surface ocean less dense, which prevents it from sinking, in turn weakening this important climate system.
Changes in the location and strength of winds blowing across the ocean can also alter the AMOC. During the Ice Age, stronger winds led to a stronger Gulf Stream, helping strengthen parts of it. In the opposite case, a future warmer world, models predict that winds may contribute to a weaker AMOC.
Is it definitely changing?
Direct instrumental measurements of the strength of the AMOC only began in 2004, when the RAPID array was installed across the Atlantic. After nearly 20 years of continuous measurements, the data show a 10-per-cent decrease in its strength, but because the observations show such a lot of change from year to year, we can’t be sure that this is a meaningful, long-term decline.
Source: https://www.sciencefocus.com/comment/atlantic-current-collapse?utm_source=pocket-newtab-en-intl