Giant drones to scan Antarctica

Twin-engine drones are being tested by the British Antarctic Survey to carry out research into global warming and marine ecosystems. Heightened avalanche risk from skiers & snowmobile adventurers. Obesity & rooting teeth alert for child health decline.

Also in this episode:

• Mercury looks like ‘disco ball’ in new Nasa pics
• Sponge test for oesophageal cancer diagnosis
• ‘Magnetic anomaly’ found under New Zealand lake
• Nuke test ‘chemically fingerprints’ gin to beat fraud

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