The explosion of animal life in Earth's oceans half a billion years ago during and after the Cambrian Period is commonly ...

Quantifying ecosystem respiration remains challenging in aquatic ecosystems. Most investigators assume that nighttime and daytime respiration are equal. Recent studies suggest measuring dissolved ...

We measure carbon and oxygen isotopes in air and ice to better understand Earth systems, including the carbon cycle, past climate, and methane. In August, Jianghanyang (Ben) Li joined Department of ...

BEIJING -- Chinese scientists have found that Earth's atmosphere experienced three major oxygen surges over the past 2 ...

Limnology and Oceanography, Vol. 59, No. 5 (2014), pp. 1493-1509 (17 pages) We used δ15N-nitrate ( NO 3 − ) and δ 18 O-NO 3 − to unravel the provenance and fate of NO 3 − in a groundwater-fed estuary.

Rare earth elements (REEs) are becoming increasingly important in electronic gadgets used in day-to-day life, yet the natural sources and sinks of REEs are largely understudied.

An international science team has made significant strides in understanding river flow dynamics. The findings leverage isotope hydrology techniques such as measuring stable isotopes in water molecules ...

Why do some elements decay in minutes, while others last billions of years? Certain "magic numbers" of nuclear particles may make all the difference.

Over 100 species of wild migratory birds, particularly ducks, swans, geese and various wading birds, harbour avian influenza (AI) viruses. Infections are transmitted amongst the wild birds by shedding ...