Aryna Sabalenka powered past 18-year-old Iva Jovic 6-3, 6-0 on Tuesday to reach the Australian Open semifinals, as extreme ...

These chemical oddities may explain why Earth seems to be deficient in certain elements — and could prove useful in catalysts ...

Earth's ozone layer, an early symbol of global environmental degradation, is improving and on track to recover by the middle of the 21st century. Over the past 30 years, humans have successfully ...