Deep space missions have previously run on nuclear power, writes Karl Grossman - and have twice showered Earth with radioactive debris. But the ESA's Rosetta probe, about to reach its destination, is 100% solar-powered - showing that space can be nuclear-free.
… of miles across the Northwest Territories of Canada. The late Dr. John Gofman, professor of … with a global increase in lung cancer. Canada demanded compensation for the …
Seeds are the gift of nature and past generations to us, and our gift to the future. Karl Grossman reviews 'Seedtime' - and finds that we must make that gift wholesome and fruitful - not a Pandora's box of genetically modified horrors.
… millions of acres, "concentrated in the US, Canada, Argentina, Brazil and China, planted …
Sunday's SpaceX crash sends a powerful warning of the dangers of nuclear power on spacecraft, writes Karl Grossman. But will NASA listen? Despite the success of solar-powered missions, it's planning to use plutonium to power future missions and a new report asserts a continuing need for the technology - even as Russia ditches the idea.
… of miles across the Northwest Territories of Canada. Despite the study's rosy history of …