Asteroids hit Earth with force of nuclear blasts
Findings released for the first time by the Nuclear Test Ban Treaty Organization — which operates a network of sensors that monitors Earth around the clock, listening for the infrasound signature of nuclear detonations — confirmed that between 2000 and 2013, 26 explosions on Earth's atmosphere were detected, ranging in energy from 1,600 kilotons — all caused by asteroid impacts.
Researchers See New Importance in Y Chromosome
There is new reason to respect the diminutive male Y chromosome. Besides its long-known role of reversing the default state of being female, the Y chromosome includes genes required for the general operation of the genome, according to two new surveys of its evolutionary history. These genes may represent a fundamental difference in how the cells in men’s and women’s bodies read off the information in their genomes.
Scientists solve 'bio-duck' ocean sound mystery: Antarctic Minke whales
A strange noise, sounding much like a duck, has been heard in waters surrounding Antarctica for decades. The sounds have also been recorded in the waters off Western Australia and the Eastern Weddell Sea off Antarctica.