Earth's oldest asteroid impact 'may have ended ice age'

The 2.2 billion-year-old asteroid impact may explain the end of an ice age, scientists say.

from BBC News - World https://ift.tt/2NOQ8ZM

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'Living celebration of community': Obamas open presidential centre in Chicago

The campus opens to the public this weekend with a museum, community amenities and more to honour the 44th US president. from BBC News htt...