Like humans, cows are social animals who form friendships, spending much of their time with a small group of friends. They also hold grudges for years and dislike other cows in the herd.
We used to think that everything shuts down when we sleep. But over the last 60 years scientists have discovered that our brains are very active while we sleep. In fact, some parts of the brain use more oxygen and glucose while asleep than when awake.
The youngest person to be awarded the Nobel Peace Prize is Malala Yousafzai (aged just 17 in 2014), for her work as a child rights activist and champion of girls’ right to education.
According to the UN, the world’s industries use enough sand to build a wall 88.5 feet (27 meters) tall and 88.5 feet (27 meters) wide around the Earth every single day. That’s 50 billion tons of sand.
Fresh corn on the cob will lose up to 40% of its sugar content after about 6 hours of room temperature storage. After that time period, the sugar is converted to starch.