Prehistoric air travel

To travel 10,000 miles through the air, you have to take an airplane. Or two. Maybe three. (It would be like flying from New York to Sydney.) Birds can alsoe do it — though they usually need at least one layover on the wayBut for a certain flying reptile that lived 70 million years ago, 10,000 miles probably wasn’t too far to fly in one trip. Ther was four giant types of these beasts, called pterosaurs( they were living at the same time that dinosaurs  and they were ten times biger)  which might have been able to go the distance in a single flight. Scientists who study fossils say these beasts    flew through the air on 30-foot-long wings and that the biggest type of these creatures weighed about 5500 pounds, which is more than an ostrich.  In other words, if you take a time machine back at least 65 million years and want to see a pterosaur, you probably won’t have much trouble. Just look for the nearest giant, flying reptile with a wingspan as wide as a backyard swimming pool. So see you  in the past!

                                                                                                                     from helene le roux

                                                                                                                     did the 10/27/2010

You imagine!Some were in NewYork :on the seventh floor of a building in downtown San Francisco, upstairs from the famous jewelry store Tiffany & Co ,more exactly we can find.plenty of gems and diamons that a compagni created in there labatory.Usually, gem stones form below Earth’s surface. They can stay on hearth for many millions  years. But those scientists are creating gemstones on their own. They do this by mimicking the processes that occur underground or by coming up with entirely new processes. Lab-made gems have the same appearance and  structures that the natural ones.Yes you will say that it is only usefull for jellerys but it is not true because , they can be used to make tools, such as lasers and drills. Lab-made diamonds could even help scientists improve electronic devices or detect dangerous bacteria in drinking water.