Hawaii is still reeling from the devastating fires that consumed Lahaina on the island of Maui last week. Professor of Meteorology from the University of Hawaii, Kevin Hamiliton, joins Science in Action to discuss the factors that make these events more likely across the Hawaiian Islands. Amongst these is climate change.

Also this week we discuss the concerning reports of a sudden spike in methane levels in the Arctic with Xin Lan of the US National Ocean and Atmospheric Administration.

A few weeks ago, we devoted a whole programme to the exciting research on human embryo models made from stem cells. Whilst representing an incredible step for medical research, these raise serious ethical questions. A team of biologists and embryologists have put together a proposal on how to move forward with this ethical quandary, Embryologist Nicolas Rivron tells us more.

And we address the incredible claim of the room temperature super conductor, LK-99, with sceptical materials scientist Michael Fuhrer.

Photo: The Maui town of Lahaina after being destroyed by wildfires Credit: Getty Images

Presenter: Roland Pease Producer: Ella Hubber Editor: Richard Collings