Mars had an oxygen-rich atmosphere around 4 billion years ago
13
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The strangers in your dreams are actually people that you've seen in real life.
50
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Your body is creating and killing about 2.4 million red blood cells per second.
17
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21