World’s Strangest

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Replacing the Kilogram

The official standard for the kilogram is a cylinder of platinum and iridium made in 1879 and kept in a vault in France. Scientists have made official copies and distributed them since that time, but many of those copies don’t equal each other in mass, and the original is undergoing decay. So now researchers are [...]

Is a Cure for the Common Cold in the Future?

Until very recently, biologists believed that once a virus enters a cell, a person’s immune system cannot combat that virus because antibodies cannot enter cells. But researchers at the Laboratory of Molecular Biology in Cambridge, UK, have uncovered evidence that antibodies can, in fact, enter cells. This opens up the possibility of attaching antiviral components [...]