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Insights from an ancient Tibetan ice core | | A short film about an expedition to Tibet's Guliya Glacier, where scientists drilled a Stone Age ice core going back 600,000 years. Plus a report on what the ice core reveals. | | |
Tonight … How can I see the Southern Cross? | | A signpost of southern skies, but can be glimpsed from southerly latitudes in the Northern Hemisphere, too. That means you if you're in Hawaii, near Mecca in Saudi Arabia, Leon and Guanajuato in Mexico, or Hanoi in Vietnam … or further south. | | |
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