The African Environmental Film Foundation is working on a documentary about a man on a quest to save sea turtles.

The horseshoe crab, a crustacean that resembles an armored vehicle patrolling the beach, is one of the most useful creatures in the sea — a trait that could doom it to extinction.

In 1967, villagers in Equitorial Guinea captured a remarkable baby gorilla unlike any they had seen before. Instead of the thick brown fur of most gorillas, this baby had a coat of pure white. Through a series of fortunate circumstances, the rare white gorilla ended up at the Barcelona Zoo, where he became an international star. Learn more about Snowflake, the white gorilla.

This weekend, Big Brown, already the champ of both the Kentucky Derby and the Preakness Stakes, has the chance to don the elusive triple crown — only 11 horses have done it before — if he noses first across finish line at the Belmont Stakes. And if he does, he’ll do it without juice.

The Hubble, which turned 18 last month, needs routine maintenance. John Grunsfeld, astronomer and astronaut, explains how astronauts will have to literally let their fingers do the walking when working on the telescope — and why the gloves of their space suits will play a major role in the mission’s success. Listen now…