In 5 billion years, the sun will run out of fuel and expand. A more immediate threat is a global warming apocalypse. Moving the Earth to a wider orbit could be a solution, and it is possible in theory.
After a long legal battle, the Waorani people have successfully protected half a million acres of their ancestral territory in the Amazon rainforest from being mined for oil drilling by huge oil corporations.
A researcher has solved a 100-year-old riddle by discovering that glass found in the Egyptian desert was created by a meteorite impact. These findings have implications for understanding the threat posed by asteroids.