Well, after scooping up some loose sand, Curiosity's Sample Analysis at Mars (SAM) suite and the Chemistry and Mineralogy (CheMin) instruments found a menagerie of chemicals, including sulfur, chlorine, and traces of carbon-based materials.

ENGADGET: NASA Curiosity rover digs Mars, finds sulfur, chlorine and organic traces of unknown origin

It heard that when police raided Mr Railton's home last October he was found to have 98 different chemicals, including some that could make chlorine gas.

BBC: Man denies 'planned poison attack on bus' in Surrey

The jury was told that when police raided his home last October he was found to have 98 different chemicals, including some that could make chlorine gas.

BBC: Man 'planned poison attack on bus' in Surrey

The report said the hospital had made an "investment in measures to control legionella" including the introduction of a silver and copper ionisation disinfection system, to replace its chlorine dioxide one.

BBC: 'Legionella concerns' remain at Basildon hospital