News tagged with atmospheric co2 levels

Plants Save the Earth from an Icy Doom (w/ Podcast)

Jul 01, 2009 | 3.8 / 5 (9) | 5

(PhysOrg.com) -- Fifty million years ago, the North and South Poles were ice-free and crocodiles roamed the Arctic. Since then, a long-term decrease in the amount of CO2 in the atmosphere has cooled the Earth. ...

Who will pick up the bill? Possible job cuts and revenue loss as a result of ocean acidification

Space & Earth / Environment

Jun 01, 2009 | 4.1 / 5 (39) | 4

Ocean acidification, a direct result of increased CO2 emission, is set to change the Earth's marine ecosystems forever and may have a direct impact on our economy, resulting in substantial revenue declines and job losses.

Search results for atmospheric co2 levels

Oceans absorbing carbon dioxide more slowly, scientist finds

Space & Earth / Earth Sciences

Nov 24, 2009 | 3 / 5 (4) | 7

The world's oceans are absorbing less carbon dioxide (CO2), a Yale geophysicist has found after pooling data taken over the past 50 years. With the oceans currently absorbing over 40 percent of the CO2 emitted by human activity, ...

Modest CO2 cutbacks may be too little, too late for coral reefs

Space & Earth / Environment

Sep 22, 2008 | 2.7 / 5 (25) | 28

How much carbon dioxide is too much? According to United Nations Framework Convention on Climate Change (UNFCCC) greenhouse gases in the atmosphere need to be stabilized at levels low enough to "prevent dangerous anthropogenic ...

Foretelling a major meltdown: Rare mineral might portend return to hothouse climate of old

Space & Earth / Earth Sciences

Dec 01, 2008 | 3.3 / 5 (47) | 27

By discovering the meaning of a rare mineral that can be used to track ancient climates, Binghamton University geologist Tim Lowenstein is helping climatologists and others better understand what we're probably in for over ...

Revised Theory Suggests Carbon Dioxide Levels Already in Danger Zone

Space & Earth / Environment

Nov 07, 2008 | 3.3 / 5 (85) | 58

(PhysOrg.com) -- If climate disasters are to be averted, atmospheric carbon dioxide (CO2) must be reduced below the levels that already exist today, according to a study published in Open Atmospheric Science Jo ...

Wind shifts may stir CO2 from Antarctic depths

Space & Earth / Earth Sciences

Mar 12, 2009 | 4.2 / 5 (69) | 6

Natural releases of carbon dioxide from the Southern Ocean due to shifting wind patterns could have amplified global warming at the end of the last ice age--and could be repeated as manmade warming proceeds, ...

Study Pushes Appearance of Northern Hemisphere Ice Sheets Back By 22 Million Years

Space & Earth / Earth Sciences

Oct 02, 2008 | 4.3 / 5 (11) | 1

(PhysOrg.com) -- Climatologist Robert DeConto of the University of Massachusetts Amherst and colleagues at four institutions are reporting in the Oct. 2 issue of the journal Nature that their latest climate model of the Northern ...

Emissions irrelevant to future climate change?

Space & Earth / Environment

Apr 28, 2008 | 4.1 / 5 (25) | 7

Climate change and the carbon emissions seem inextricably linked. However, new research published in BioMed Central’s open access journal Carbon Balance and Management suggests that this may not always hold true, although it may ...

Scientists Find Ozone Levels Already Affecting Soybean Yields

Biology / Ecology

Nov 17, 2009 | 3 / 5 (2) | 0

(PhysOrg.com) -- Current atmospheric ozone levels are already suppressing soybean yields, according to Agricultural Research Service (ARS) scientists and university cooperators studying the effect of global ...

Time-Tunneling for Climate Change Clues

Biology / Ecology

Nov 23, 2009 | 4 / 5 (1) | 0

(PhysOrg.com) -- If you look closely at individual plant species' responses in the past, you may find that the largest effects of high carbon dioxide (CO2) levels occurred decades ago, according to Agricultural ...