单词:oil water ratio (owr)
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Oxfam: Power, Water Shortages in Goma As fighting continues in the eastern DRC between government forces and M23 rebels, the humanitarian crisis is growing worse. Oxfam says its stepping up efforts to help about 80,000 people in and around Goma, the
This is Scientific American's 60-Second Science. I'm John Matson. Got a minute? Earth's surface is dominated by oceans. But where did all that water come from? Asteroids and comets smashing into the early Earth have long been thought to be a promisin
While one of the most pressing political and social issues facing the Arab world rarely makes headlines, it is an issue that some political analysts believe could lead to the next great confrontation in the region. Rapidly expanding Arab populations
Joel: So, Mitchell, I only surfed for about a year and I never got very good at it. I wonder if you could explain how a beginner goes about learning how to surf. Mitchell: Well, that's a tough question because I was surfing ever since I was small so
Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani
Gone when you get stuck Sleeping when you wake up Lover on the other coast Off to the races Headed other places Chasing a familiar ghost No one said it would be this hard How could I know? Why do we always get so far Before we let go? And we separate