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Mr John Dingell's committee in the US House of Representatives has predictably made very little headway in its inquiry into the immunology of transgenic mice. But it is too soon to celebrate a famous victory for science.
On the third anniversary of the Chernobyl reactor accident, Nature's Moscow correspondent carried a dosimeter from Kiev to Pripyat and into the Chernobyl sarcophagus.
New measurements of simple complexes of hydrogen fluoride and nitrous oxide have thrown light on the properties of two quite distinct kinds of hydrogen bonds.
The exquisite sensitivity of the polymerase chain reaction means DNA contamination can ruin an entire experiment. Tidiness and adherence to a strict set of protocols can avoid disaster.
