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Speech rehabilitation experts can predict how well a patient will recover from aphasia, a disorder caused by damage to the part of the brain responsible for producing language.

New research finds that increases in monsoon rainfall over the past million years were linked with increases in atmospheric CO2 and the import of moisture from the southern hemisphere, which suggests stronger rains in the future as CO2 levels rise.

If you're wearing gold jewelry right now, there's a good chance it came from an illegal mining operation in the tropics and surfaced only after some rainforest was sacrificed, according to researchers who studied regulatory efforts to curb some of these environmentally damaging activities.