Vehicle emissions in California have steadily declined over the years as environmental policies and advancing technology clean up traffic exhaust. Yet, since 2010, microscopic particulate matter and ground-level ozone have stubbornly refused to decline, thanks to an increase in “secondary sources.” Some of these sources include the trees and shrubs that make our city streets … Read more
A special cluster of stars swirling around the violent center of the Milky Way could become “immortal” by continually capturing and destroying dark matter particles in their cores, a new study suggests. Researchers discovered this using computer simulations of stellar evolution dark matter particles captured by the gravity of these stars can often collide and … Read more
An E.coli outbreak that has sickened more than 200 people has been traced to lettuce. So is it safe to eat? The Food Standards Agency (FSA) told Sky News it is “too early to determine” how the lettuce leaves may have become contaminated – but it is “confident” this is the source. Three companies have … Read more