Science and Nature
Extreme ice melt on Greenland
Nearly all of the ice sheet covering Greenland's surface melted over several days this month - something scientists have never seen before.
Jellyfish made from heart cells
Researchers in America have created an artificial jellyfish by running an electric current through cells taken from a rat's heart.
Huge water supply found in Africa
A massive underground water source has been found in one of the driest countries in Africa.
Video gaming fish help science
Scientists have developed a video game for fish to help them find out more about how they hunt their prey.
Where we get our electricity
Joe's travelled the UK to find out what it'll take to power Britain in the future.