Operation Breakthrough: Fighting to save thre...

During the Vietnam War, North Vietnamese VietCong guerrillas built a vast network of tunnels in the south of the country as part of the insurgency against the South Vietnamese government and their American allies. The tunnel network was a key base and shelter for the North Vietna ...  Show more

In March 2008, former female wrestler Juana Barraza was found guilty of murdering at least 11 elderly women in Mexico City. The murders took place over a period of seven years, and Barraza became known as the “little old lady killer”. She admitted to murdering three women and tol ...  Show more

Baleen whales were almost hunted to extinction. Now they face a new threat – global shipping. But despite humans blighting their lives, can they now recover and help revive ocean life?Justin Rowlatt speaks to two researchers who observe these intelligent, sociable giants up close ...  Show more

From 6,000-year-old cave paintings to silver screen stars in movies like Free Willy, whales have long captured the human imagination. And it makes sense—they're among the largest and most intelligent creatures to ever live on our planet. This time on Sidedoor, we’ll explore ou ...

Meet three homosapiens who are passionate about preserving the future of other species. 

Every spring Inupiaq hunters camp on the sea ice north of the Arctic Circle, in hopes of capturing a bowhead whale to share with their village. But as global warming accelerates ice melt, it threatens the tribe’s 4,000-year-old tradition. National Geographic photographer Kiliii Y ...  Show more