3M relaunches ‘greener’ Scotchgard

Scotchgard, the water and stain repellent, was a sturdy household name before environmental concerns led 3M to phase out production two years ago. Now the company is relaunching the brand with squeaky-clean replacement products and expanding into new areas, such as paint

Earth ‘will expire by 2050’

A study by the World Wildlife Fund warns that the human race is plundering the planet at a pace that outstrips its capacity to support life. Earth’s population will be forced to colonise two planets within 50 years if natural resources continue to be exploited at the current rate

Light turns into glowing liquid

Light can be turned into a glowing stream of liquid that splits into droplets and splatters off surfaces just like water. The researchers who’ve worked out how to do this say liquid light would be the ideal lifeblood for optical computing, where chips send light around optical circuits to process data

Choo-Choo Trains on Energy Crunch

The Sierra Railroad is planning to use diesel train locomotives to produce power for California. Each of the 48 engines are expected to produce 2.1 megawatts of power for a thousand hours each year. A key advantage to this plan is that since the PowerTrains are mobile, they can be taken to the areas that need power the most, so it doesn’t have to be routed across the state through the power grid

Evergen targets recyclable buildings

Australian scientists have launched a new project to galvanise Australia’s property, building and construction industry to embrace sustainability. Evergen is an idea with a tangible outcome — commercial buildings, which are built faster, perform better, sell for more, and which ultimately, are recyclable and have a zero net cost to the environment

Satellite Back From The Dead

AMSAT-OSCAR 7 was launched in 1974 for radio hobbyists to use. In 1981 the onboard batteries died and the satellite went silent. Then on 21 June 2002, 20 years later, a hobbyist testing some new equipment made an amazing discovery — AMSAT-OSCAR 7 is live once more, both broadcasting and accepting signals — via Slashdot

The Boy and his Nuclear Reactor

A Boy Scout who went a little too far in trying to achieve a merit badge in Atomic Energy. From smoke alarms, lantern components, the paint from radio clocks, and a little help from the Nuclear Regulator Commission, David Hahn attempted to build a nuclear reactor in his mother’s shed