In Search Of Martian Varnish

Ways of searching for life on Mars are ten a penny, but here’s the latest suggestion, based on studies performed on rocks in Earth deserts. These rocks are covered with ‘desert varnish’, a patina of silica and other elements deposited on the rocks over time by wind and weather, trapping fragments of organic DNA as the layers are laid down. If we can find Martian rocks with a similar coating, a vigorous scraping of samples could yield evidence of life in the Red Planet’s past.

Plastics? Sweet, Dude!

Plastics from crude oil fractions? Not for much longer, at least not in a financially viable way. Help is at hand for our plastic-hungry civilisations, however – Wisconsin researchers have found more efficient ways of making the same polymers used as the start-points for plastics using fructose (fruit sugar) as their raw material. It’s always been theoretically possible, but it’s amazing what shrinking profit margins will do for research into efficiency.