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Tiny meteorites no larger than grains of sand hold new clues about the atmosphere on ancient Earth, according to scientists.

Tiny, symbiotic fungi play an outsized role in helping plants survive stresses like drought and extreme temperatures, which could help feed a planet experiencing climate change, report scientists at Washington State University.

Flow rates and time of year must be taken into account to better understand the potential risks posed by emerging organic contaminants in rivers and streams, according to Penn State researchers who studied contaminant concentrations and flow characteristics at six locations near drinking water intakes in the Susquehanna River basin.

Mixing drinking water with chlorine, the United States’ most common method of disinfecting drinking water, creates previously unidentified toxic byproducts, says  Carsten Prasse from Johns Hopkins University and his collaborators from the University of California, Berkeley and Switzerland.

The German government has introduced a plan to phase out coal-fired power entirely by 2038 — a target that could cut the country’s carbon dioxide emissions by a quarter, Reuters reported.