speeding toward the far-distant edges of our solar system. People on Earth will not be able to see it again until 2062. Scientists in many countries waited and prepared for years for the return of Halley's Comet. They planned new ways to observe the comet as it came near the Earth. ...
(You may read the questions first.) SCREENGRABS BBC1 PLANET EARTH 9PM Fresh Water provides an expansive subject for the third programme in the BBC’s fascinating new natural history series. Broadly we investigate the world’s lakes and rivers and the c