A new study reveals that the aerobic nitrogen cycle in the ocean may have occurred about 100 million years before oxygen began to significantly accumulate in the atmosphere, based on nitrogen isotope ...

Locals in Tonga had always known it as Maka Lahi, “large rock,” but scientists quickly realized it was much more.

2. Determine the Annual Interest Payment: Under the terms of the spousal loan, the lower-income spouse must pay 3% interest ...