Earth's atmosphere pulses in sync with the sun's fiery outbursts, indicating it is more sensitive to solar activity than previously thought, according to new research.

Quasars represent some of the most luminous and energetic phenomena in the universe. These distant powerhouses are driven by ...

Mercury is released by environmental and human-driven processes. And some forms, specifically methylmercury, are toxic to humans. Therefore, policies and regulations to limit mercury emissions have ...