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One of the historic uses of wood was for heating. In recent years, however, most heating in the United States…
One of the historic uses of wood was for heating. In recent years, however, most heating in the United States has come from other sources of energy, such as petroleum,...
The Did You Feel It? (DYFI) system allows Internet users to report earthquake data when they feel an earthquake. The…
The Did You Feel It? (DYFI) system allows Internet users to report earthquake data when they feel an earthquake. The data submitted are put into computer programs that create “Did...
Too much carbon dioxide (CO2) in the atmosphere is mostly caused by two things: burning fossil fuels and the loss…
Too much carbon dioxide (CO2) in the atmosphere is mostly caused by two things: burning fossil fuels and the loss of trees. Urban trees help to keep urban areas cooler,...
Too much carbon dioxide (CO2) in the atmosphere is mostly caused by two things: burning fossil fuels and the loss…
Too much carbon dioxide (CO2) in the atmosphere is mostly caused by two things: burning fossil fuels and the loss of trees. Urban trees help to keep urban areas cooler,...
In “Batter Up,” learn about how engineers designed a test to determine baseball bat breakage rates for different types of…
In “Batter Up,” learn about how engineers designed a test to determine baseball bat breakage rates for different types of wood.
Mountain pine beetles are important to the Western United States. They have a very special life cycle that includes staying…
Mountain pine beetles are important to the Western United States. They have a very special life cycle that includes staying “supercool,” or dormant, for most of their lives. The scientists...
Mountain pine beetles are important to the Western United States. They have a very special life cycle that includes staying…
Mountain pine beetles are important to the Western United States. They have a very special life cycle that includes staying “supercool,” or dormant, for most of their lives. The scientists...
Although scientists know that many weeks of low rainfall increase the chances of wildfires, they do not know which daily…
Although scientists know that many weeks of low rainfall increase the chances of wildfires, they do not know which daily weather conditions are the best for determining the danger of...
Although scientists know that many weeks of low rainfall increase the chances of wildfires, they do not know which daily…
Although scientists know that many weeks of low rainfall increase the chances of wildfires, they do not know which daily weather conditions are the best for determining the danger of...
If the temperature of a stream rises too high, the animals that live in the stream may find it difficult…
If the temperature of a stream rises too high, the animals that live in the stream may find it difficult to survive. Big changes in a stream’s daytime temperature as...
The scientists in this study wanted to know if cars parked in shady parking lots emit fewer gases than cars parked in…
The scientists in this study wanted to know if cars parked in shady parking lots emit fewer gases than cars parked in sunny parking lots. If that is the case, it would give...
The scientists in this study wanted to know if cars parked in shady parking lots emit fewer gases than cars parked in…
The scientists in this study wanted to know if cars parked in shady parking lots emit fewer gases than cars parked in sunny parking lots. If that is the case, it would give...