Green Car Congress

OCTOBER 6, 2010

Since the introduction of hybrid corn in the 1940s, along with improved agronomic practices, the average US bushel per acre has increased by more than 400% from 30 to approximately 140. Tags: Brief. Hybrid seed technology has historically been responsible for exponential increases in agricultural production and profitability.

Hybrid 199

Hybrid Guatemala Production Netherlands 199

Green Car Congress

MAY 22, 2010

Their research shows that, since at least the 1940s, the deep water has become progressively hotter and saltier, and that, since the 1990s, this process has speeded up. Tags: Brief. Each year the temperature of the deep layer of the Western Mediterranean increases by 0.002 ºC, and its salt levels increase by 0.001 units of salinity.

2000 186

2000 Water 2010 186

Green Car Congress

JANUARY 8, 2010

Every decade since the 1940s has seen a progressively warmer Australia than the preceding decade, suggesting a potential shift in decadal temperature variations. Tags: Brief. Click to enlarge. . Australia’s mean 2009 temperatures as compared to historical. records, 1950-present. Source: Australian Bureau of Meteorology. Jack Rosebro.

Australia 186

Australia 2009 2007 Transportation 186

Green Car Congress

JANUARY 22, 2010

Looking back to 1880, when modern scientific instrumentation became available to monitor temperatures precisely, a clear warming trend is present, although there was a leveling off between the 1940s and 1970s. Tags: Brief. In the past three decades, the GISS surface temperature record shows an upward trend of about 0.36 degrees F (0.2

2009 199

2009 North America United Kingdom 2002 199

Green Car Congress

APRIL 24, 2009

A slowdown occurred in 1930–36 after the Great Depression and again during the 1940s, possibly because of World War II. Tags: Climate Change Emissions. The carbon dioxide record isn’t immune to temporary dips lasting several years or more. The large volcanic eruptions of Mt. Agung (Indonesia) in 1963 and Mt. Butler, Pieter P.

2008 150

2008 CO2 Emissions Climate Change 150

Green Car Congress

OCTOBER 16, 2009

In parts of southeast Asia losses of mangroves since the 1940s are as high as 90%. Tags: Climate Change Ocean acidification Policy Ports and Marine. Currently, on average, between 2-7% of our blue carbon sinks are lost annually, a seven-fold increase compared to half a century ago. The Natural Fix?-The

Mariner 170

Mariner Carbon Emissions Climate Change 170