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.
You can hear rhubarb growing in the dark. The process of growing it in complete darkness forces it to develop so quickly (as much as an inch a day) that you can actually hear the squeaks, creaks, and pops as it gets bigger.
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African buffalos vote on travel decisions. Adult females will stand up and look in a certain direction one at a time, before sitting down. The direction with the most amount of looks is the one that the herd travels in. Only adult females are allowed to vote and if the vote is divided, they may split up temporarily.
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Water might not be wet. This is because most scientists define wetness as a liquid’s ability to maintain contact with a solid surface, meaning that water itself is not wet, but can make other objects wet.