Sharks are 400 million years old.
Humans kill an estimated 100 million sharks a year.
This World Wildlife Fund ad perfectly shows what’s really horrifying about sharks.
- Hillary Clinton's campaign was reportedly hacked as part of what appears to be a broad cyber attack on Democrats.
- Two brothers suspected of planning terror attacks have been arrested in Belgium, prosecutors say.
- Four people in Florida are likely the first to contract the Zika virus from mosquitos in the US, the state's governor says.