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In June this year there was the first detected occurrence of rabies in Cape fur seals, discovered after a rabies case in a dog that had been bitten by a seal. Professor Wanda Markotter, Director of the Centre for Viral Zoonoses at University of Pretoria, has been trying to work out how the virus spread into seals and how to keep people (and their pet dogs) safe.

The Japan Meteorological Agency issued a seismic 鈥渁dvisory鈥� last week alerting local authorities and the public to a heightened risk of a massive, tsunami-generating earthquake on its southeast coast. Californian emergency manager and sociologist James Goltz, has been working with Japanese experts to evaluate a new dynamic alert system that they introduced after the great 2011 earthquake and tsunami which claimed up to 20,000 lives further north.

We hear from Professor Alan Jamieson from the depths of the Tonga Trench. He recently dived into it to see what weird and wonderful creatures he鈥檇 find there 鈥� but when he reached the bottom, he didn鈥檛 see what he expected...!

And Steven Goderis of the Free University of Brussels tells us about the Chicxulub impactor - the massive asteroid smacked into Earth off the Mexican coast causing the mass extinction event which wiped out the dinosaurs. He鈥檚 part of a paper in the journal Science, looking into the history of the impactor - revealing it was a rare carbonaceous asteroid from beyond Jupiter.

Presenter: Roland Pease
Producer: Jonathan Blackwell
Production Coordinator: Andrew Rhys Lewis

(Image: Fighting Seals. Credit: Edwin Remsberg via Getty Images)