EPA overrides scientists' calls for tougher pollutant limit

The Trump administration on Monday made final its decision to leave limits for a deadly kind of air pollutant unchanged, overriding scientific findings that tougher standards could save tens of thousands of lives yearly.

Nanoparticles can turn off genes in bone marrow cells

Using specialized nanoparticles, MIT engineers have developed a way to turn off specific genes in cells of the bone marrow, which play an important role in producing blood cells. These particles could be tailored to help ...

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