The latest Nyiragongo eruption was not entirely unexpected, the volcano’s lava lake inside the crater had been building up for years. Local volcanologists say it was only a matter of time before an eruption occurred. The big concern was where the flank of the volcano would be breached as the city of Goma rests under the volcano and there are potential fissures even within the town.

Cyclone Yass was the second Cyclone to hit India within a week. Are these events becoming more common and are they related to rises in global temperatures? Climatologist Roxy Koll has been monitoring the situation.

Greenland’s pristine glaciers might not be so pristine. Jemma Wadham from Bristol university and her team have found unexpectedly high levels of Mercury in meltwaters - similar to those from industrial pollution. They say research now needs to focus on the impact for wildlife and people in the Arctic region.

And the elusive Sowerby’s beaked Whale doesn’t travel very much despite pockets of the species being found across the Atlantic. Kerri Smith has been researching this species, which is rarely seen alive. Using samples from whales beached or caught accidentally she was able to build up a picture of their distribution.

Presenter: Roland Pease

(Photo: Nyiragongo volcano erupting. Credit: Getty images)