Fifteen international agencies spend $62 billion every year on space travel. What's fueling our costly — and dangerous — drive to explore the universe?

In the 21st century, China has become a global economic powerhouse. Why was the rest of the world so slow to notice its rise to the top?

Over 10% of the world's electricity comes from nuclear power. But with radioactive waste and the threat of nuclear meltdown, are we playing with fire?

Growing evidence suggests that psychedelic drugs could treat brain injuries and psychological problems. But can we get past their controversial history?

Sweet deal or bitter pill? High fructose corn syrup rose up to dominate supermarket shelves, but what is it doing to our health?