Earth Wise
Turning Farms Into Deserts
By now, we all know too much salt is bad for our health. But did you know excess salt also threatens global food security? According to a new report by the United Nations, 20% of irrigated farmland worldwide suffers from escalating salt levels. Losses in crop productivity are estimated to cost 27 billion dollars annually.
Sustainable New Year’s Resolutions
With the holiday season behind us, it’s a great time to reflect on the past twelve months and set new goals for the coming year. Sure, there are tried and true New Year’s resolutions – join a gym, read the classics – but what about a resolution to be kinder to the Earth?
Toilet-to-Tap: It’s A Good Thing
California, which is the number one food and agricultural producer in the United States, is in the third year of one of the state’s worst droughts in a century. This has led to an increase in wildfires, losses in agriculture, and water restrictions and shortages. Some small communities even run the risk of running out of water.
A Solar Bike Path
Solar panels are an increasingly common sight on rooftops and also in standalone ground arrays. But people are starting to embrace the idea of incorporating solar power into other elements of existing infrastructure.
Climate Change And Airplanes
Climate change could have a major impact on future air travel. According to a new study published in the American Meteorological Society Journal, researchers suggest warmer global temperatures will make it harder for airplanes to take off. This could either limit how much luggage or how many people can board an airplane in the future.
Nanoscale Batteries
Electric vehicles and renewable energy are widely thought to be essential in combating climate change. Both desperately need better and cheaper batteries if they are to achieve truly widespread use.
Big Plans For Better Batteries
The government has established goals for the next decade to produce a quarter of the country’s electricity from solar and wind power and to have a million all-electric vehicles on the road. If these goals are to be met, we will need cheaper batteries with higher energy density and faster charging time.
A Tale Of Syrup And Seeds
For decades, maple syrup producers have looked to the weather to gauge sap yields. But new research reveals a more valuable prediction tool: the number of seed helicopters that rained down from sugar maple trees in the fall.
Geoengineering: Not A Quick Fix
Geoengineering – the deliberate, large-scale intervention in the Earth’s climate system – is the subject of continuing speculation by researchers from many disciplines. The notion is that if our efforts to combat climate change by reducing greenhouse gas emissions are too little or too late, we may have to try to change the climate deliberately.
Using Less Water
According a new report from the US Geological Survey, water use across the country has reached its lowest level in 45 years. This reflects positive trends in conservation achieved by improved water-use technologies and water management.
A Boom In Energy Storage
Wind and solar power are growing by leaps and bounds. Both are playing an increasingly large role in the electricity grid. But as their roles increase, so does a troublesome vulnerability: utilities cannot control when the sun shines or the wind blows. So how can we become dependent on wind and solar power?
An App Called i-Tree
There are computerized applications for just about everything – from tracking our finances to planting a vegetable garden. So it should come as no surprise that there are even apps that aid in the conservation, management, and understanding of urban forests.
Dangerous Air Near Oil And Gas Sites
A peer-reviewed study recently published in the journal Environmental Health looked at the air quality near natural gas wells in five states: Arkansas, Colorado, Ohio, Pennsylvania, and Wyoming. In 40 percent of the air samples, laboratory tests found benzene, formaldehyde and other toxic substances at levels above what the federal government considers safe for brief or long-term exposure. In some cases, the levels were far above the safe standards.
Increasing Solar Grid Parity
Oil prices have come down dramatically. Gasoline is suddenly cheaper than it has been in a long time. Historically, every time fossil fuels get cheaper for a while, people lose interest in alternatives like solar energy. That may be about to change.
Road Salt
Salt has been used to keep winter roads free of ice and snow since the 1940s. It works by lowering the freezing point of water. In the U.S. alone, some 15 million tons of salt is applied to roadways each year. While its use has real benefits, in terms of safety and navigation, there have been cumulative costs to the environment.
What Is The Carbon Limit?
A central issue in dealing with climate change is determining how much carbon we can emit into the atmosphere before global temperatures increase too much. How much is too much? Most experts think that if average temperatures increase by more than 2 degrees Celsius (3.6 degrees Fahrenheit), the consequences will be severe and irreversible.
Deep Sea Carbon Dioxide Storage
The Southern Ocean plays an important role in the exchange of carbon dioxide between the atmosphere and the ocean. One important part of this is the growth of phytoplankton, which act like a natural sponge for carbon dioxide. When these plankton die, they can sink to the bottom of the ocean and thereby store some of the carbon dioxide that they have absorbed. This process has been termed a “biological carbon pump.”
Pizza Box Chemicals
The Natural Resources Defense Council has recently asked the Food and Drug Administration to take action on several chemicals commonly found in food packaging. One group of chemicals in particular – long-chain perfluorocarboxylates, or PFCs – has already been identified by the FDA as potentially unsafe.
Community Solar
