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Phytoplankton growth in many areas of the open ocean is limited by the low availability of iron, despite the presence of high concentrations of other nutrients. Relatively small-scale experiments have shown that fertilising such areas with iron incre
Although small, Ceres and Vesta gravitationally interact together and with the other planets of the Solar System. Because of these interactions, they are continuously pulled or pushed slightly out of their initial orbit. Calculations show that, after
Geologists have used temperature measurements from more than 20,000 boreholes around the world to estimate that some 44 terawatts (44 trillion watts) of heat continually flow from Earth's interior into space. Where does it come from?
You’ve got a material that both converts and stores energy,” he says. “It’s robust, it doesn’t degrade, and it’s cheap.” One limitation, however, is that while this process is useful for heating applications, to produce electricity would require anot
owever, it is conceivable that scientists could look at viruses and protein molecules directly, using new breeds of ultra-high-resolution "superlenses." Physicians might have more accurate ultrasound scanners at their disposal. Acoustical cloaks co
