Monday: Nigeria kidnapped girls - latest, Nereus implosion, airport ring found, and more...

Boko Haram releases a video of some of the kidnapped girls in Nigeria -- and says it won't let them go unless its own members are freed...The unmanned submersible Nereus made a lot of deep observations -- but now, its human engineers are crushed to find out it's been crushed...and when a Calgary woman lost her wedding ring at Toronto's Pearson Airport, her husband embarked on a quixotic search -- but it turned out he wasn't just tilting at windmills. 

Part One

Nigeria kidnapped girls: latest
Last month, Boko Haram kidnapped nearly three hundred girls in Nigeria. Today, the group has released a video it claims shows some of those girls. And it's threatening not to release them unless some of its members are freed from prison.

UN drone debate
It sounds like a science fiction nightmare. But tomorrow, the UN will begin a debate on the use of so-called killer robots -- weaponized machines that can decide on their own when to kill.

Airport ring found
Imagine the stress of losing your wedding ring at Canada's largest and busiest airport: Toronto's Pearson International.

Part Two

Turkey-Cyprus decision
The European Court of Human Rights says Turkey must pay for its 1974 invasion of Cyprus.

Nereus implosion
An unmanned deep-sea submersible called Nereus was an inanimate hero to the marine research community for its amazing discoveries in the darkest parts of the ocean. But now, it's been squashed in the line of duty.

Part Three

Whales: Cape St. George and Rock Harbour, Newfoundland
The towns of Cape St. George, and Rock Harbour, Newfoundland, were faced with the same problem: a dead, rotting whale plopped on the beach. And it was all out of ideas as to how to get rid of it.

Paper cleans water

An American chemist tells us about her latest invention: a remarkable new kind of paper that kills harmful bacteria in water at low cost.