The human population is actively modifying Earth’s atmosphere, biosphere, hydrosphere, and lithosphere through resource consumption and the use of technology. Researchers have recognized that the number and magnitude of the environmental problems now facing the Earth are directly correlated to the size of the human population. Humans can influence natural phenomena and processes at the local, regional, and global scale. The various human populations found on our planet also vary greatly in terms of affluence, level of education, and access to health care. The area of knowledge known as sustainable development tries to find solutions to the various social and environmental problems we now face.
Carbon footprintLast Updated on 2013-04-05 at 17:12
A carbon footprint is the measure of the amount of greenhouse gases, measured in units of carbon dioxide, produced by human activities. A carbon... More »
Point source pollutionLast Updated on 2013-04-05 at 16:34
The U.S. Environmental Protection Agency (EPA) defines point source pollution as “any single identifiable source of pollution from which... More »
Bicilavadora: Green Washing MachineLast Updated on 2013-04-04 at 17:06
In Peru, many women earn their living by washing clothes by hand, which limits the amount of laundry they can do each day.
How does it... More »
Population growth rateLast Updated on 2013-03-28 at 16:31
The population growth rate measures how populations change in size over time. The units of population growth rate are individuals per time. Population... More »
Carrying capacityLast Updated on 2013-03-25 at 14:11
In population ecology, the carrying capacity is the population size at which the population growth rate equals zero. Population size is constrained by food availability,... More »