Asteroid that killed dinos hit with power of 10 billion atomic bombs
six million years ago, life on our planet was going on just as it had on any other day. But in moments, after 180 million years of prosperity, this extraordinary abundance of life was all but obliterated. The asteroid which wiped out the dinosaurs hit the Yucatan peninsula in Mexico with the power of 10 billion atomic bombs of the size used in the Second World War. The impact set alight vast wildfires stretching thousands of miles, triggered towering tsunamis and blasted so much sulphur into the atmosphere it blocked the sun, causing the catastrophic global cooling that ultimately doomed the dinosaurs. Now, a new study led by the University of Texas at Austin has confirmed the theory by finding hard evidence in the hundreds of feet of rocks that filled the impact crater within the first 24 hours after impact. London: Scientists have found why many people struggle to keep their weight in check as they get older, even if they don’t eat more or exercise less than before.
The study, published in ‘Nature Medicine’, found that lipid turnover in the fat tissue — the rate at which lipid or fat in the fat cells is removed — decreases during aging and makes it easier to gain weight.
The researchers at Karolinska Institutet in Sweden studied the fat cells in 54 men and women over an average period of 13 years.
In that time, all subjects, regardless of whether they gained or lost weight, showed decreases in lipid turnover in the fat tissue. Those who didn’t compensate for that by eating fewer calories gained weight by an average of 20%, according to the study done with researchers at Uppsala University in Sweden and University of Lyon, France.