Accordingly, ice is a tipping element that responds abruptly to changes across this tipping point. Trespassing the tipping point for phase transition from ice to liquid water sets all the other tipping elements contained in the Arctic region in motion […]

Penis worms today use their hydrostatic skeletons to make burrows with a distinctive shape, and paleontologists have discovered similar shapes in rocks 542 million years old.

You need to limber up your wits before the exam.

Here too was the beef-house, which had its beef pan, a fixture of the house, standing on bricks and having an outer coat of lead. With the beef-house went the wet larder which had its trestle table on which to lay the beef and its block on which the meat was cut up, together with a great powdering trough, a great powdering tub and various shelves and half tubs, all of which were fixtures.