A research team has shown that methanogens, micro-organisms ubiquitous in low-oxygen environments like aquifers, soil and even permafrost, can propel their growth by dissolving calcium carbonate, one ...

Stanford University chemists have developed a practical, low-cost way to permanently remove atmospheric carbon dioxide, the ...

Scientists have discovered how to turn common minerals into materials that spontaneously remove and store carbon dioxide from the atmosphere. In the lab, the materials pull CO2 from the air thousands ...

The technique is pretty straightforward and potentially very cheap, but will need to be scaled up significantly to make a difference.

Skimmed milk has a little more calcium than semi-skimmed, which in turn has a little more calcium than whole milk. The reason is simply that as the fat is removed, the watery proportion of the ...