Sentences with phrase «time human population growth»

Not exact matches

This yield gap has excited much interest from people studying the future of the world's food supply at a time when the explosive growth of the human population needs more, more and even more.

Human NPCctx or NPCctx - GDNF were grown as neurospheres for approximately 39 population doublings (Figure 1A), at which time they were dissociated and analyzed for growth factor release.

««The arid lands of southwestern North America will imminently become even more arid as a result of human - induced climate change just at the time that population growth is increasing demand for water, most of which is still used by agriculture,» said Richard Seager, Senior Research Scientist at the Lamont - Doherty Earth Observatory and one of the lead authors of the study.

Interestingly, the most recent 3500 years of prehistory was a time of Native American population growth and sociopolitical changes, perhaps increased human - induced fire, as well as a period of climatic instability [41,42], both of which could have affected contemporary levels of mtDNA diversity.

In tracking population growth, spikes in resource appetites, and explosive change in technologies that are sheathing the planet in human activity, it's not hard to find support for the contention by Stuart Hart of Cornell that our moment is unique, that we're not suffering from «chronocentrism,» the tendency of each generation to see its time as special (in a good or bad way).

It would be cool to see a wide collection of maps covering many different issues, not just climate and food production, but, for instance, poverty and wealth, arms production and war, clothing production and leisure time, education levels, consumption, production, health, population growth and decline, movement of immigrants, human rights, animal populations, housing ownership, housing starts, anything basically which can be measured in a visual map... not just for the US but as global maps, collected on pages where you could drag them around to sit on top of each other and try and make sense of the various impacts...

It's time Zero Population Growth and any other group designed to civilly and wisely control human population got off their butts and started ramping up the discussion.

While the above analysis yields good results for by tying past climate change to increases in human CO2 emissions, it should be cautioned that the suggested exponential time relation is not suitable for projecting the future over longer time periods, because of possible changes in human population growth rates and absolute limitations on carbon available in remaining fossil fuels.

Plan B thoughtfully examines the critical global issues of our time: fresh water scarcity, soil depletion, deforestation; desertification; fisheries collapse; habitat destruction; species extinction; extreme weather; global warming, energy policy, and human population growth.

Taking the pace of change in science, technology, population growth, commerce and finance from around 1830 as the pivotal time, nothing that religion could offer has been able to match the complexity of human need and its reliance upon laws.