Students struggling with homework is an increasing problem. Ever increasing demands on student’s time, and a shortening attention span globally are some root causes
The meteor that is thought to have wiped out the dinosaurs, or at least caused the conditions that did is estimated to be about 10 to 15 kilometers wide. The reason it has such a large carter of over 150km across, called the Chicxulub crater is it was a Ferrari of meteors and was travelling really fast at about 20 km per second. Which is about 72000 kilometers an hour!