Word: gas
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...carbon dioxide gets most of the attention when it comes to greenhouse gases, but it's not the only one that's warming the earth. Methane - a gas that is found in everything from landfills to cow stomachs - also plays a big role. Although global methane-emissions levels are much lower than CO2 emissions, pound for pound methane is a more powerful greenhouse gas; a ton of it has 23 times the warming effect of a ton of CO2. And methane, like CO2, is on the rise thanks to us: about 60% of global methane emissions come from man-made...
...fastest of the body waves is the P wave, and it's thus the first to travel from the epicenter to a seismic station where it can be detected. P waves don't give you a whole lot of notice, but even a little bit can help. In California, gas lines in many homes are now equipped with P-wave detectors, which sense a coming tremor and shut off the inflow valve to prevent fires and explosions if the house is shaken severely...
Dawn Pannell gained 35 lb. within the span of a few months, but she figured that was because of depression. She felt movement in her abdomen but assumed it was gas. She had mood swings but thought that was because of her recent unemployment. Finally, mistaking labor pains for constipation, she delivered a full-term baby into her toilet...
...last week's clashes, Palestinians pelted Egyptian forces across the border with rocks, and the Egyptians responded by firing shots and tear gas into the crowd. One Egyptian soldier was killed, reportedly by a Palestinian sniper, and scores of Palestinians were injured. Earlier, Egyptian security forces had clashed with international activists accompanying a relief convoy that had originated in Britain, leaving more than 50 people injured. The group's leader, leftist British MP George Galloway, was expelled from Egypt on Jan. 9, after exiting Gaza...
Eventually, the disk of gas dissipates, and the proto-planets are fixed in their permanent orbits. Exactly where those orbits lie depends on all sorts of factors peculiar to a given planetary system - how much material there is in the original proto-planetary disk, how much of that is dust and how much is gas, how big the dust grains are, how hot the star is and more. That's one reason we should expect each solar system to look a little bit different. Which, as it turns out, they...