The Office of the Director of National Intelligence (ODNI) recently released a report entitled Global Water Security that claims water supply issues around the globe will lead to economic instability, civil and international wars, and even the use of water as a weapon in the next several decades.

In typical shock-and-awe fashion, the U.S. government paints a grim picture of so-called global warming, water shortages, and other water problems as the causes of major global destabilization, which it also says may be mitigated if certain steps are taken to offset them. Read more

When looking at the location of rivers and the amount of streamflow in rivers, the key concept is the river’s “watershed”. What is a watershed? Easy, if you are standing on ground right now, just look down. You’re standing, and everyone is standing, in a watershed.

A watershed is the area of land where all of the water that falls in it and drains off of it goes into the same place. Watersheds can be as small as a footprint or large enough to encompass all the land that drains water into rivers that drain into Chesapeake Bay, where it enters the Atlantic Ocean. This map shows one set of watersheds in the continental United States; these are known as National 8-digit hydrologic units (watersheds). Read more

If you ask your grandparents what life was like when they were kids, the answer will probably be that things were simpler, slower, less automated, and that people did not move so often. But since your grandparents’ time two major things have happened: (1) the population of the United States has increased greatly, and (2) technology and scientific innovations have come to play a major role in our lives.

Pesticide use has grown because not only must our exploding population be supplied with food, but crops and food are grown for export to other countries. The United States has become the largest producer of food products in the world, partly owing to our use of modern chemicals (pesticides) to control the insects, weeds, and other organisms that attack food crops. But, as with many things in life, there’s a hidden cost to the benefit we get from pesticides. We’ve learned that pesticides can potentially harm the environment and our own health. Water plays an important role here because it is one of the main ways that pesticides are transported from the areas where they are applied to other locations, where they may cause health problems. Read more

A geyser is a vent in Earth’s surface that periodically ejects a column of hot water and steam. Even a small geyser is an amazing phenomenon; however some geysers have eruptions that blast thousands of gallons of boiling hot water up to a few hundred feet in the air.

Old Faithful is the world’s best known geyser. It is located in Yellowstone National Park (USA). Old Faithful erupts every 60 to 90 minutes and blasts a few thousand gallons of boiling hot water between 100 and 200 feet into the air. Read more

Under a rapid sea-level rise model most coastal marshes will be flooded

Coastal Wetlands are at Greater Risk

Many coastal wetlands worldwide – including several on the U.S. Atlantic coast – may be more sensitive than previously thought to climate change and sea-level rise projections for the 21st century.

U.S. Geological Survey scientists made this conclusion from an international research modeling effort published December 1, 2010 in the journal Geophysical Research Letters, a publication of the American Geophysical Union. Scientists identified conditions under which coastal wetlands could survive rising sea level. Read more