Climate Change: Preserving Ice Memory

Global temperatures are rising, and glaciers are melting. That's bad news for climate researchers who gather data from ice core samples. The Ice Memory Initiative collects and saves ice cores in glaciers, which contain valuable information on the history of the climate but are melting fast. Also on Tomorrow Today : E-mobility: How sustainable is lithium mining? Most of today's electric vehicles use lithium-ion batteries. Global demand for lithium is rising rapidly. But there are concerns that widescale mining in the 'lithium triangle' is a dirty business. Just ask! What is an isotopic signature? What can it be used for? This week's viewer's question comes from Esomchukwu Ezeamaku in Nigeria. The science of sleep Psychologist Christine Blume from the University of Basel studies sleep disorders. Hypnosis: Does it help you sleep? Sleep researchers want to find out what effect hypnosis has on sleep, and whether it can help people reach a state of deep sleep, which becomes more elusive as we age. Broadcasting Hours: DW English SAT 25.02.2023 03:30 UTC SUN 26.02.2023 21:30 UTC MON 27.02.2023 05:30 UTC MON 27.02.2023 15:30 UTC Lagos UTC +1 | Cape Town UTC +2 | Nairobi UTC +3 Delhi UTC +5,5 | Bangkok UTC +7 | Hong Kong UTC +8 London UTC +/-0 | Berlin UTC +1 | Moscow UTC +3 San Francisco UTC -8 | Edmonton UTC -7 | New York UTC -5 DW Deutsch+ MON 27.02.2023 07:30 UTC Vancouver UTC -8 | New York UTC -5 | Sao Paulo UTC -3