Sentences with phrase «milestones in human history»

2015 featured some of the most significant climate milestones in human history.

«It was one of the most unheralded and important milestones in human history,» White said.

«It's remarkable, using a lowly house mouse to monitor a major milestone in human history,» says Melinda Zeder, curator of Old World archaeology at the Smithsonian National Museum of Natural History in Washington, D.C., who wasn't involved with the study.

Not exact matches

In May 2013, the CO2 concentration in Earth's atmosphere surpassed a milestone of 400 ppm for the first time in human history, a level that many scientists consider dangerous territory in terms of its impact on Earth's climatIn May 2013, the CO2 concentration in Earth's atmosphere surpassed a milestone of 400 ppm for the first time in human history, a level that many scientists consider dangerous territory in terms of its impact on Earth's climatin Earth's atmosphere surpassed a milestone of 400 ppm for the first time in human history, a level that many scientists consider dangerous territory in terms of its impact on Earth's climatin human history, a level that many scientists consider dangerous territory in terms of its impact on Earth's climatin terms of its impact on Earth's climate.

Four hundred ppm is just a milestone, but it's just one more indicator that we are living in the Anthropocene era of history where human activity significantly affects the environment and subsequently, our food, water and energy security.

400 ppm is just a milestone, but it's one more indicator that we are living in the Anthropocene era of history where human activity significantly affects the environment and subsequently, our food, water and energy security.

The Guardian: On 10 May 2013, the concentration of climate - warming carbon dioxide in the atmosphere passed the milestone level of 400 parts per million for the first time in human history.

As we pointed out in our coverage of the 2012 milestone, the influence of human - caused climate change on the U.S. temperature history (including last year's record warmth), while undoubtedly present, is difficult to ascertain.