Huge bubbles of plasma billowing out from the Milky Way’s center might contain scraps from all over the galaxy — and beyond. A new look at gas clouds in the galaxy’s Fermi bubbles shows that the clouds contain stuff from the galaxy’s starry disk and from some mysterious other source. The finding could shed light […]
The secret to efficiently heating some buildings might lurk beneath our feet, in the heat that humans have inadvertently stored underground. Just as cities warm the surrounding air, giving rise to urban heat islands, so too does human infrastructure warm the underlying earth (SN: 3/27/09). Now, an analysis of groundwater well sites across Europe and […]
Four weeks ago, the U.S. Centers for Disease Control and Prevention signed off on COVID-19 vaccines for young children. Days later, doctors’ offices and clinics began rolling out shots for babies and toddlers. In Portland, Ore., a clinic featuring bubbles, toys and a dance party delivered more than 1,100 shots in two days. In Arizona, […]