Several times over the past century, scientists and environmental engineers have proposed spreading slurries of dissolved iron into the oceans in order to “fertilize” the waters and promote vast blooms of marine plants (phytoplankton). Phytoplankton consume carbon dioxide as they grow, and this growth can be stimulated in certain ocean basins by the addition of iron, a necessary micronutrient.
You’ve probably heard about the health risks of secondhand smoke, but medical experts are now warning people about third-hand smoke. They say it’s particularly hazardous for children.
Third-hand smoke is the residual contamination from tobacco smoke that remains after a cigarette is put out. Researchers say it’s a toxic dust that settles onto surfaces and can spread in the air. The new study says children are especially susceptible because they’re more likely to be in contact with areas that can trap harmful chemicals, including carpets, floors, and furniture.
Interesting! First time I’m hearing of third hand smoke but I already figured that ash can cause health problems.
