The largest coral reef in the world is severely threatened by climate change, but researchers are developing strategies that could contribute to saving the Great Barrier Reef.
NASA’s extraordinary video shows how the Sahara fertilises the Amazon
For the first time ever a video shows how Saharan dust is transported throughout the atmosphere and contributes to fertilising the Amazon and Caribbean.
Unique and incredible 3-dimension pictures show for the first time how the Saharan dust is moved and transported throughout the Atlantic Ocean and finally deposited in the Amazon forest. It is dust rich in phosphorus that helps to fertilise one of the planet’s most important forests.
It is a work that started in 2007 and was completed thanks to data collected from NASA’s satellite Calipso (Cloud Aerosol Lidar and Infrared Pathfinder Satellite), which showed an estimation of 27.7 million tonnes of dust that settles in the Amazon every year.
“We know that dust is very important in many ways. It is an essential component of the Earth system. Dust will affect climate and, at the same time, climate change will affect dust. As researchers, we ask ourselves two basic questions: How much dust is transported? And how does climate change affect the amount of dust that travels across the Atlantic?” said Hongbin Yu, atmospheric scientist at the University of Maryland and leading author of the study.
Estimates show an amount of dust able to transport 22,000 tonnes of phosphorus each year, i.e. the same quantity that is lost due to rain and land leaching. The Saharan dust represents a sort of natural fertilisation, essential for the survival of our planet’s lung. Results are part of a broader research, an environment remote sensing that will help understand the role of dusts on climate, both on a local and global level.
Seychelles have extended its marine protected area, which now covers over 400,000 square kilometres, an area larger than Germany.
Norwegian oil giant Equinor had pulled out of drilling for oil in the Great Australian Bight, one of the country’s most uncontaminated areas. A victory for activists and surfers who are now campaigning for the area to be protected forever.
30 per cent of the planet needs to be protected to stop precipitous species decline. The UN has set out its aims for the the COP15 on biodiversity scheduled for Kunming, China in October.
Ocean warming has risen to record highs over the last five years: just in 2019 the heat released into the world’s oceans was equivalent to that of 5-6 atomic bombs per second. The culprit, no doubt, is climate change.
Once a year on Christmas Island something incredible happens: millions of crabs cross the whole island to reach the ocean, where they drop their eggs.
Malaysian activist Gabby Tan’s mission is to raise awareness about the risks faced by our oceans, and the need to protect them. She spoke to us about her passions and what inspires her.
A new study finds worrying overlap between shark hotspots and human fisheries in the high seas, leaving these animals little space in the ocean to evade the threat of being caught.
After returning to shore last January due to a fault, the floating barrier has set sail towards the Pacific Trash Vortex once again with the aim of removing the largest plastic island floating in the ocean.