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UK terror threat level raises to its highest level after a blast on London underground. So-called Islamic State has claimed responsibility. Also in the programme: World powers split over how to deal with North Korea missile test; and Iceland government collapses over paedophile scandal.

(Photo: A white container burned inside a London Underground tube carriage at Parsons Green station. Credit: AFP PHOTO / HO / @sylvainpennec)

The latest five minute news bulletin from BBC World Service.

President Trump and Democratic leaders Chuck Schumer and Nancy Pelosi are close to a deal that would continue DACA and in the Senate, many Democrats sign on to Bernie Sanders' "Medicare for All" plan. Internationally, more than 12,000 troops from Russia and Belarus are engaged in war games that have prompted Kiev to ramp up border security, rebuilding has begun in the Caribbean after Hurricane Irma and we'll have an update on the Rohingya crisis in Myanmar. Discussing the week's top domestic news stories are Karen Tumulty, national political reporter for The Washington Post, Caitriona Perry, Washington correspondent and bureau chief for RTE, Melissa Ross, host and producer of WJCT's First Coast Connect and Jessica Gardetto of the National Interagency Fire Center. Discussing international news is Christian Caryl, editor of DemocracyPost at The Washington Post, Jennifer Williams, deputy foreign editor for Vox and Uri Friedman, staff writer for The Atlantic.

Paleontologists are piecing together the bones of giant fish and ancient reptiles that inhabited the long-dried North American inland sea. Plus, great recyclers: dung and carrion beetles. And how anthropologists use genetic information and found artifacts to piece together how the first Americans populated the continent.

Biologists wait to assess the damage done to a delicate ecosystem by Irma. And in 13 years, the Cassini orbiter showed us lakes on Titan, geysers on Enceladus, and a new understanding of all things Saturn.

The latest five minute news bulletin from BBC World Service.

Paleontologists are piecing together the bones of giant fish and ancient reptiles that inhabited the long-dried North American inland sea. Plus, great recyclers: dung and carrion beetles. And how anthropologists use genetic information and found artifacts to piece together how the first Americans populated the continent.

Biologists wait to assess the damage done to a delicate ecosystem by Irma. And in 13 years, the Cassini orbiter showed us lakes on Titan, geysers on Enceladus, and a new understanding of all things Saturn.

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A new opera about the nature of wilderness will be performed outside this weekend at the Lewis and Clark Law School Amphitheater. Two Yosemites: An Environmental Opera, is being produced by Opera Theater Oregon. Justin Ralls, Co-Artistic Director, and composer of Two Yosemites, joins us.