Sustainable Living
Always On Is Expensive
We have heard for years that electronic devices in our homes that stay on even when we are not using them waste a lot of energy. These so-called “vampire loads” have become more prevalent all the time as our gadgets become smarter and more connected.
The Downside Of Nitrogen Fertilizer
Yesterday, we introduced the topic of synthetic nitrogen fertilizer. Anyone with a lawn or a garden is familiar with the product. But prior to the 1950s, it use was not the norm.
Too Much Of A Good Thing
Bags of garden fertilizer are labeled with three numbers, such as 15-4-5. These numbers indicate the percent of nitrogen, phosphorus, and potassium in the product. The remainder of the bag is filler that helps the fertilizer disperse.
Record CO2 Concentrations
Two years ago, we talked about a report out of the observatory on Mauna Loa in Hawaii of the first modern measurements of carbon dioxide levels greater than 400 parts per million. But it was only in that location and only for a brief period of time.
An Advance In Artificial Photosynthesis
Photosynthesis is nature’s great energy conversion system. Plants and other organisms convert light energy from the sun into chemical energy in the form of carbohydrate molecules, which are synthesized from carbon dioxide and water.
Protecting Working Forests
The U.S. has more than 420 million acres of “working” forests, which provide timber for construction, as well as pulp for paper and packaging. Apart from these economic benefits for communities, such forests provide clean air and water and wildlife habitat. Nearly 45 million acres of these forests are at risk of being lost to development.
Affordable Jet Fuel
The aviation industry contributes a relatively small percentage of the world’s greenhouse gas emissions – less than 2%, in fact. But jet fuel represents a major expense for the industry that makes it vulnerable to price fluctuations and geopolitical forces.
Airguns In The Atlantic
Seventy-five scientists have issued a plea to President Obama to halt the use of seismic airguns in the Atlantic Ocean. The guns are used for oil and gas exploration mapping, and create a blast of air and sound underwater.
When Planting Trees Is Bad For Biodiversity
Over the past decade, more than five million acres of forests and farms worldwide have been cleared for agro-industrial rubber plantations. The driver is the growing demand for rubber products – especially tires – which use 70% of the annual rubber production.
[Read more…] about When Planting Trees Is Bad For Biodiversity
A New Oil Repellant
As long as we continue to transport oil around the world in ships, there is going to be the danger of oil spills, which have been some of our worst environmental disasters. While preventing such spills from happening at all is the first line of defense, we also need better approaches in cleaning up the spills that do occur.
The Smoke Gets In Your Eyes
Are you a smoker who is trying to stop? Or are you helping a loved one kick their tobacco habit? Whether you’ve quit or tried to get someone else to, it is almost certainly because you know that smoking is unhealthy.
How Much Room Is There For Solar Power?
California has mandated that it will get at least a third of its electricity from renewable sources by 2020 and that it will reduce its greenhouse gas emissions by at least 80% from 1990 levels by 2050. To meet these goals, the state has been installing solar power at a staggering rate.
Leaky Pipes And Polluted Waters
Most of us don’t spend a lot of time thinking about our wastewater. We want our toilets to flush and our dirty wash water to go down the drain. We assume this water is efficiently routed to a treatment facility, where it is cleaned up and returned to the environment. But reality doesn’t measure up to our expectations.
Saving Sheep By Helicopter
Sierra Nevada bighorn sheep were never a huge presence in California. They tended to concentrate in loosely connected pockets scattered through the Sierra Nevada Mountains. But over time, the connections were severed. Hunting and diseases spread by domestic sheep diminished the herds and predation by mountain lions took a toll. Eventually the subspecies was down to its last 100 individuals.
Spring Flooding Shapes Streams
In the Northeast, streams once covered in ice are flowing again. The floods that often accompany spring thaw bring big changes to these ecosystems.
Desalination And California’s Drought
Four years of drought in California have created a serious water crisis. 2014 was the third driest year in 119 years and was also the warmest year in recorded history. California’s Sierra snowpack, which provides a third of the state’s water, is at its lowest level in 65 years.
When Eco-Fences Fail
Fences and eco-passages meant to protect animals from highway traffic can lead to more fatalities, particularly for reptiles like turtles and snakes. That’s what scientists in Canada found after monitoring an 8-mile stretch of highway crossing the Georgian Bay coastline of Lake Huron, a region rich in reptile biodiversity.
Human Pollution And Fish
We recently spoke on this program about how up to 28 billion pounds of plastic debris enters the world’s oceans every year. Well now a new study has shed some light on how this and other human-caused pollution may be impacting deep-water marine fish.
The Tragedy Of The Atmosphere
