Agence France-Presse: Far from offering a simple fix, sci-fi solutions to global warming may in fact make the problem worse, a probe of "geo-engineering" options said on Tuesday.
Once mocked as unscientific, geo-engineering proposals are gaining traction as carbon emissions soar, placing Earth on track for warming of maybe four degrees Celsius (7.2 degrees Fahrenheit) by 2100.
Ideas, mainly experimental or untested, include building mirrors in space to reflect the Sun's rays or growing plankton to boost absorption...