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Understanding nickel catalysis

Catalysis is a chemical phenomenon that increases the rate of a chemical reaction by spending only a tiny amount of additional substance, called a catalyst. Around 90 percent of all commercially manufactured ...

8 minutes ago
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Clinton urges State Dept. to release her emails

Hillary Rodham Clinton urged the State Department to release the emails she wrote from a private email account as secretary of state, weighing in on a controversy that has generated negative attention this ...

46 minutes ago
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