Some cities have vehicle-free days, when private cars, trucks, and motorcycles are banned in the city centre. People are encouraged to use public transportation like buses, taxis and metros. Do the advantages of this outweigh the disadvantages? Give reasons for your answer and include any releva...
I'm going to be honest, I've been wrong about some songs. The song "Seven Whole Days" — I hated that song. I didn't get it, didn't want to do it. Why am I singing this song? It sounds like the Wild Wild West. Am I a rapper? And L.A. and Kenny said, "Trust us."...
The dusty red planet has fascinated us for centuries. Even as we learn more, its mysteries keep us in suspense.
Why do some people seem to be naturally happier than othersResearchers from the University of Edinburgh have known the answer according to their recent study. Nine hundred twins took part in the study and had their happiness levels measured. The result shows that our genes(基因), in fact, con...
What type we do help friend? [translate] a我能有你的电话号码 I can have your telephone number [translate] a不要错过 Do not miss [translate] awaiting for you?I should! waiting for you? I should! [translate] a从此不再放纵自己,为了自己的未来努力奋斗。 From this time on no longer indulge...
2. I just like the zoom view. But that's compromised by the narrower field a zoom imparts. Too, I recall Mounseys eyepiece review that gave TVs Zoom Nagler a poor review compared to other ovulate, less expensive and better on planets. Too, especially at the focal length of some zooms...
Earthlings are in for anotherLeap Daynext week. That got us wondering: Do Martians have Leap Days, too? An awkward ratio between rotational and orbital periods means Mars has more leap years than common years. NASA/JPL/USGS A Lucky Coincidence ...
Have a look at some of the numbers, history and lore behind the (not quite) every four year phenom that adds a 29th day to February. BY THE NUMBERS The math is mind-boggling in a layperson sort of way and down to fractions of days and minutes. There’s even a leap second occa...
Why are runways longer for takeoff and landings at high altitude airports? Why do scientists believe that the Earth's inner core is solid and that the outer core is liquid? Why are the roofs of some houses blown off during stormy days? Explain tidal waves, what...
Why do airplanes wings not flap to fly? Why is it important that a satellite be above Earth's atmosphere? Why danger signals are painted red? Why is the atmosphere much rarer on some of the planets other than that on Earth? Explain why the light was thought to be a form of electromagn...