成人快手

A new study links a warming Arctic with sudden cold winters, like the one being experienced in Europe right now. It is all down to the weakening of the polar vortex. A team in Potsdam in Germany have linked this to climate change causing the Arctic sea ice to melt at much greater rates. Roland Pease talks to climatologist Stefan Rahmstorf, Head of Earth System Analysis at the Potsdam Institute for Climate Impact Research.

Seven Hour Operation Removes Giant Brain Tumour
Neurosurgeon Trimurti Nadkarni has led a surgical team to remove what is claimed to be the world鈥檚 largest brain tumour. The 31-year-old patient from Mumbai had a tumour that weighed 1.8kg. It had grown beneath the skin of his scalp through the skull and into the brain. Dr Nadkarni of the BYL Nair Charitable Hospital tells Claudia Hammond how his team approached the seven hour long, high risk operation.

Medieval Violence
How violent are we? Compared with our past, that is. Research from collections of gruesome medieval remains paint a picture of a violent society, where men and women commonly carried weapons. It suggests inflicting or receiving severe wounds may have been a part of daily life. And yet, as Marnie Chesterton reports, other studies suggest this level of violence is actually lower than that experienced in some societies today.

Eastern Ghouta Hospitals
The doctors and nurses working in besieged Eastern Ghouta in Syria say they are close to collapse as they try to save lives. It comes as the region sees the most intense period of fighting that the area has endured. Claudia Hammond speaks to Meinie Nicolai, director general of MSF in Brussels, who is in contact with medical staff in Eastern Ghouta.

Wearable Technology Devices
At this year鈥檚 American Association for the Advancement of Science, recently held in Texas, Roland Pease tries the next generation of wearable technology. He tries some smart plasters that measure your heartbeat and sweat chemistry; flexible, wearable LED health displays, and ultrathin, flexible electrodes.

How a Smart Glove Can Help The Blind
Eighteen year old Nikola Krsti膰 discusses his haptic 鈥渟mart鈥� glove. It aims to help the blind and visually impaired by vibrating at an increasing intensity as it moves closer to an object and can also recognise faces and detect colours, as he explains to Gareth Mitchell.

The Largest Family Tree Ever
Scientists have harnessed genealogy datasets to create a massive family tree with over 13 million members and 86 million records! The new dataset offers fresh insights into the last 500 years of marriage and migration in Europe and North America, and the role of genes in longevity.

(Picture caption: Storm Emma meets the Beast from the East bringing further snow chaos to the UK 鈥� credit: Jeff J Mitchell/Getty Images)

The Science Hour was presented by Roland Pease with comments from medical reporter at New Scientist, Clare Wilson

Producer: Katy Takatsuki

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