pollution from cement mills may only be dangerous in one urban region; acid rain from sulfur emissions may damage forests hundreds of miles from the source; and eutrophication from fertilizer runoff may affect ocean fisheries a thousand miles downstream from the farms that are the source of the ...
Getting to zero carbon emissions won’t save the world. We’ll have to also remove carbon from the air—a massive undertaking unlike anything we’ve ever done.
It is the source of all lives and we need it every day. But in fact we're facing serious water problems. Although water covers 71 percent of the Earth's surface, we can only use a very small amount of it. Only about 3 percent of the world's water is fresh water(淡水). Today, ...
When you find yourself___a trail, but not in a completely___area of land, you have to answer two questions: Which___is downhill, in this particular area? And where is the nearest water source? Humans typically live in valleys, and on supplies of fresh water.___, if you head down...
“but a lot of them are still built on the outskirts. that is sprawl.” sprawl causes all sorts of problems, not just wildfires—more invasive species and more domesticated critters like cats and dogs wreaking havoc on local ecosystems. it means air pollution, noise pollution, light pollution...
This is an easy win for conservation and humanity alike, and therefore hard to argue with. Nevertheless, arable crops remain the major source of calories for most of humanity, resting upon high-intensity production of a few staple grains. We will need to continue to grow crops even in the...
For one thing, no one denies that communication online brings great convenience to us, especially to those who have friends or relatives in remote areas. Because the change makes it possible for them to have frequent chat. And, the way we contac...
This is driven by frequent trips to popular tourist destinations such as Spain, Thailand, Turkey and Greece. Globally consumer based calculations would shift the responsibility of emissions by tourists to the large wealthy nations, with the most international tourists. The understanding of emission ...
As evidenced by the link between the current analysis, P. lanceolata extracts tend to be a significant source of bioactive metabolites. Consequently, they could play a prominent part when you look at the production of pharmaceutical materials.Asthma (ASTH) is a chronic inflammatory disease that ...
Shark liver contains lipids that enhance human resistance to cancer, and the horseshoe crab Limulus not only has a serum that isolates tumor cells and white blood cells from the whole blood of cancer patients, but is also the source of substances used to detect bacterial toxins in human body ...