Historical events occurring on March 15 'gloomy' make many people abstain
historically, there are many scary events happening on march 15 that many people are afraid of war, epidemic, natural disasters ... is it a coincidence or a hidden mystery?
Tags : ozone layer
Few doubts of concrete can help limit air pollution
indian scientists have discovered that concrete surfaces can help solve the problem of air pollution when it absorbs sulfur dioxide - a major pollutant.
The mystery and the irresistible beauty of nacre clouds
nacreous clouds are one of the most beautiful clouds to remove anyone's eyes when seen. but this is a rare natural phenomenon of poisoning that destroys our atmosphere.