Climate change is messing with how we measure time: Study

Struggle to wrap your head around daylight savings? Spare a thought for the world's timekeepers, who are trying to work out how climate change is affecting Earth's rotation—and in turn, how we keep track of time.

New framework embraces uncertainty to make sense of history

There are many things we don't know about how history unfolds. The process might be impersonal, even inevitable, as some social scientists have suggested; human societies might be doomed to decline. Or, individual actions ...

Mapping how deforested land in Africa is used

Africa's forested areas—an estimated 14 % of the global forest area—are continuing to decline at an increasing rate—mostly because of human activities to convert forest land for economic purposes. As natural forests ...

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