Earth Wise
Natural foods and GMOs
More and more people are trying to make smart choices about the foods they eat. They care about where their food comes from. The food industry has responded to this trend by marketing numerous products with labels like “organic”, “natural”, “artisanal” and so forth.
How green are electric cars?
Cars that run on electricity instead of gasoline have some important environmental advantages, not the least of which is that they don’t have exhaust pipes emitting greenhouse gases and other forms of pollution. But the electricity they run on has to come from somewhere and greenhouse gas emissions are often involved in generating electricity.
Birds and climate change
New research by the National Audubon Society suggests that half of North America’s bird species could face extinction by the end of this century as a result of climate change.
Ethanol from corn waste
Corn ethanol comprises 10% of the US gasoline market as a result of federal mandates. This heavily subsidized product consumes billions of bushels of corn each year. While originally touted as beneficial to the environment and to the economy, corn ethanol has proven to be highly controversial. Corn ethanol production has come under attack for its energy efficiency, environmental impact, and effects on land use.
Whales take Manhattan
This summer, if you took a trip to New York City, you may have seen a humpback whale breeching in the New York Harbor. A decade ago this would have been an anomaly. But within a few short years, humpbacks sightings have become common enough to warrant whale-watching cruises.
Super spiders in the city
Most of us assume the creepiest of creepy-crawlers are found in the wild – for instance, that you’d be more likely to encounter a spider the size of your face while camping than while dragging your trash cans out to the sidewalk.
Raw sewage in New York
Many of us take for granted the relatively seamless workings of our infrastructure – sewage systems, for instance. Yet in New York City, and particularly Brooklyn’s Gowanus Canal, the system is far from seamless. In fact, the reality is both alarming and a major public health hazard.
Sharing a cab
If you have ever been stuck in bumper-to-bumper traffic in New York City – and if you have ever been to New York City, you surely have – you probably noticed that a large percentage of the cars on the road are taxis. In fact, New York has over 13,000 cabs on its streets.
Smokey the Bear turns 70
August marked not just the anniversary of America’s longest-running public service campaign, but also a birthday – Smokey the Bear turned 70.
Vertical farming
Feeding 7 billion people is clearly one of the greatest challenges we face and estimates are that by the end of the century, the world’s population could reach 10 to 12 billion people.
The hydrogen economy
Many automakers believe that the ultimate replacement for gasoline power will be hydrogen fuel cells. In order for this to come about, production of hydrogen will need to be economical and energy efficient.
How safe is hydrogen?
Hydrogen-powered cars are soon to hit the market and there are many advantages of such vehicles in terms of environmental friendliness and driving range. But filling our tanks with hydrogen makes many people nervous and they wonder just how safe hydrogen is.
Hydrogen from water and sunlight
If hydrogen fuel cell cars are going to become commonplace, we need cleaner and cheaper ways to produce hydrogen. Making it from natural gas is not environmentally desirable and so far, using electrolysis to break apart water has been too energy intensive and too expensive.
Splitting water with a AAA battery
Several major automakers are betting on hydrogen fuel cell cars as the non-polluting future of personal transportation. Indeed both Toyota and Honda will begin selling fuel cell cars in the US some time next year.
Hydrogen cars are coming
Cars that run on electricity instead of fossil fuels are becoming increasingly common and may eventually replace their internal combustion counterparts entirely. However, it is not at all certain what the source of electricity in cars will be.
Mercury’s toxic legacy
New research from Harvard University indicates that the amount of mercury in the environment is much higher than previously thought. Prior estimates put mercury levels at around 720,000 metric tons; the new study suggests it’s actually two-and-a-half times that number.
Energy from stopping trains
Hybrid cars, buses and trucks are as much as 30% more energy efficient than their conventional counterparts. The bulk of this energy savings comes from regenerative braking. This is the process of recapturing the energy that is lost to friction in the process of slowing or stopping the vehicle. Instead of heating up brakes, the wheels slow down by turning a generator and making electricity that can be put to use to power the vehicle or other onboard systems.
Getting shark fin soup off the menu
Score one for the sharks. According to a new report by WildAid, sales of shark fin soup have dropped by up to 70 percent. A symbol of wealth and status in China and other parts of Asia, shark fin soup has historically been served at weddings, banquets, and government functions. The dishes’ popularity has had a devastating effect on the world’s shark populations.
Algorithms and ecology: A new partnership.
If you shop online, this is a familiar scenario: You click on a product like a book, and the online merchant presents you with a list of related items. “If you like X, you might also like Y.” Behind the scenes, the merchant has assigned a series of attributes to each product. For instance, the new Sibley Guide to Birds is classified as nonfiction, recent, about nature, about birds, illustrated, a field guide, and so on. Based on that information, the merchant might suggest a different bird book, or a memoir about birding.
[Read more…] about Algorithms and ecology: A new partnership.