What land crabs reveal about evolution's repeats

How do combined sewer overflows affect water quality in Philadelphia?

In Philadelphia and many urban areas across the U.S. with sewer systems dating back to the 1800s, more frequent flooding…

Fraudulent paper mills may be manipulating scientific citations and amplifying unreliable findings

The likely manipulation of citation numbers by research paper mills in high-impact cancer journals has been uncovered by…

Scientists have just voted to abolish leap seconds

Since 1972, officials have added 27 leap seconds to the universal clock, but in a meeting this week in France they have …