Low levels of carbon dioxide in the atmosphere required trees to cut down their carbon dioxide consumption. As a result, the Earth's atmosphere and climate were stabilized over the past 24 million years, say scientists.
It was a euphoric moment for students at the University of London after they serendipitously spotted a powerful supernova in the M82 galaxy. The supernova is one of the closest to be spotted from Earth in recent decades, say scientists.
A team of scientists in Britain made the find while mapping a highland region under the West Antarctic Ice Sheet to better understand where the sheet originated and how far, under a warming climate, it might retreat.