What is a galaxy?
What are they made of and how many different types are there? Astrophysicist Peter Laursen explains.
Seagrass plants have an excellent capacity for taking up and storing carbon in the oxygen-depleted seabed, where it decomposes much slower than on land. This oxygen-free sediment traps the carbon in the dead plant material which may then remain buried for hundreds of years.
The region is warming faster than anywhere else on Earth and its polar bears and melting glaciers have become a key symbols of climate change. But the Arctic, it seems, is not as well researched as you might think.
The letter is signed by more than 650 academics from a number of research fields in Denmark. They are calling for universities to lead by example, and implement climate friendly policies in the workplace in the hope of inspiring change in other sectors.
For the past two years, scientists from the Geological Survey of Denmark and Greenland have skied across the Greenland ice sheet to see how much snow is accumulating. Their data will ultimately improve projections of sea level rise.