pollution

Falling space debris is a growing problem that will only get worse

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At the beginning of this year, the quiet of a Florida neighborhood was shattered when a piece of waste from The International Space Station crashed into a house. That was followed in May by a 90-kilogram piece of a SpaceX Dragon spacecraft crashing into a camping resort in North Carolina, raising the question: Are space … Read more

Trees have become a hidden source of air pollution in Los Angeles: ScienceAlert

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California vehicle emissions have fallen steadily over the years as environmental policies and advanced technology clean up traffic emissions. However, since 2010, microscopic air particles and ground-level ozone have stubbornly refused to fall thanks to the rise of ‘secondary sources’ – many of which are the trees and shrubs that line our city streets. To … Read more