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When you're working in the yard this summer, take a look up: Using a satellite, NASA scientists are paying attention to how healthy your lawn and garden are. Next month, the agency plans to launch the Orbiting Carbon Observatory-2. Its primary aim is to create a global map of carbon sources and carbon sinks. The OCO-2 mission will provide the most detailed map of photosynthetic fluorescence - that is to say, of how plants glow - ever created. Using this data, scientists should be able to estimate how quickly the world's plants are absorbing carbon from the atmosphere. The applications of the project are wide-ranging, but the science is easy enough to understand. During photosynthesis, a plant absorbs light, then immediately re-emits it at a different wavelength. This is known as fluorescence. In a laboratory setting, botanists can measure the intensity of fluorescence to estimate how actively a plant is photosynthesizing. A satellite could, in theory, detect the light emitted by the world's plants to estimate how much carbon the plants are absorbing. But there has always been a big, fiery problem: the sun.Continue here More discoveries you might want to know about

It's a truism that the ocean depths will remain Earth's last great wilderness, and judging by the recent find of a new species of 'skeleton shrimp' there's still a lot of eye-popping discoveries yet to be made. Named Liropus minusculus due to their small size, these tiny crustaceans (above) were identified by a research team from the University of Seville and were found living in a reef cave offshore from California's Catalina Island. The female of the species is on the left and the male on the right, with their descriptions first published 8 October in the journal Zootaxa.