News
- Earth
Kitchen tap may offer drugs and more
Excreted drugs and household chemicals are making their way through community waste-treatment and drinking-water plants.
- Earth
Composting cuts manure’s toxic legacy
Composting manure reduces its testosterone and estrogen concentrations, limiting the runoff of these hormones, which can harm wildlife.
- Tech
Curve on golf club sends ball straight
Although the curved faces of golf clubs called drivers blast balls sideways, their convex design works just right to compensate for other effects tending to make balls veer off the fairway, new calculations show.
- Tech
Cooling film tempers tiny hot spots
Shattering a 40-year-old performance limit, a new layered, semiconductor material promises to spur wider use of so-called thermoelectric devices that cool or heat electrically and can convert heat to electric power.
