News tagged with concentration

Nitrogen fixation key to ocean life

How do ocean gardens grow? Specifically, how do those gardens get nitrogen, which is critical to producing life, and will nitrogen sources to the ocean in the future be different as the ocean changes?

dateMar 15, 2016 in Environment
shares29 comments 0

Record leap in carbon dioxide seen in 2015

The level of carbon dioxide in the atmosphere increased at a record pace last year, US government scientists reported, raising new concern about one of the top greenhouse gases and the effects of global warming.

dateMar 10, 2016 in Environment
shares576 comments 4

Fish populations revealed through seawater analysis

A research group led by YAMAMOTO Satoshi, a research fellow at the Kobe University Graduate School of Human Development and Environment, has shown that measuring quantities of fish DNA in seawater can reveal how many fish ...

dateMar 07, 2016 in Ecology
shares5 comments 0

Tracking worm sex drive, neuron by neuron

The males prowl a dark, crowded space. Using a mix of instinct and sensory cues, they pursue potential mates. But how do they decide when to make their move? New findings answer that question, at least for the tiny soil-dwelling ...

dateFeb 23, 2016 in Plants & Animals
shares27 comments 0

Long-term global warming not driven naturally

By examining how Earth cools itself back down after a period of natural warming, a study by scientists at Duke University and NASA's Jet Propulsion Laboratory confirms that global temperature does not rise or fall chaotically ...

dateFeb 01, 2016 in Earth Sciences
shares1240 comments 18