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Astronomy
New Kind of Pulsar
About three times a second, a 10,000-year-old stellar corpse sweeps a beam of gamma-rays toward Earth. Just discovered by NASA's Fermi Gamma-ray Space Telescope, the object, called a pulsar, is the first one known that "blinks" in pure gamma rays.
Oct 17, 2008, 19:48 PST
Ecology
Alternative fuels may drain dwindling water supplies
As the search for new fuels intensifies, researchers in Texas report that switching to certain alternative fuels to power cars, trucks, and SUVs may require the use of much more water than conventional petroleum-based gasoline and diesel.
Oct 15, 2008, 12:50 PST
Chemistry
The “e-Nose”: Scientists try to develop an electronic sniffer
For almost 25 years, chemists and other scientists have tried to build a machine that can take a whiff of the air, food or other objects and say whether the odor is nasty or nice, the e-Nose.
Sep 3, 2008, 12:22 PST
Ecology
Can Compact Flourescent Bulbs Cause Headaches?
Can those energy-efficient compact fluorescent light bulbs that are popular now cause headaches because of the flickering they do? I converted my whole house over last fall and both my kids were complaining of headaches on and off.
Aug 14, 2008, 20:38 PST
Astronomy
Looking for Water on the Moon
NASA is going to crash a piece of their current LCROSS probe into a shadowy part of the moon to see if they can blast away material that will expose signs of water.
Aug 11, 2008, 11:42 PST
Ecology
Is the Ocean's Destruction Reversible?
Researchers say there is six times more plastic than plankton in the ocean. Have we damaged the ocean to the point that it can no longer recover?
Aug 5, 2008, 21:02 PST
Ecology
Check Your Water Sense
Think you know everything about water? Take the quiz and learn how to save water, then study the lesson plan on simple things we can do to save water every day.
Jul 29, 2008, 09:17 PST
Ecology
Green Commuting
Goodyear, AZ implements a new express bus to downtown Phoenix to save local commuters time and money, while saving the environment.
Jul 25, 2008, 20:48 PST
Ecology
Green Roofs
How can you modify a roof to provide an environmental benefit?
Jul 20, 2008, 21:03 PST
Ecology
Autism and the Environment
What’s going on with all the cases of autism cropping up and no one seems to know why? It stands to reason it must be something (or some things) environmental, yet every study allegedly turns up no conclusion...
Jul 6, 2008, 20:31 PST
Ecology
Corn Based Plastics
What are the environmental pros and cons of corn-based plastic as an alternative to conventional petroleum-based plastic?
Jun 29, 2008, 20:53 PST
Ecology
Cogeneration - Recycled Energy
Cogeneration—also known as combined heat and power, distributed generation, or recycled energy—is the simultaneous production of two or more forms of energy from a single fuel source.
Jun 24, 2008, 21:24 PST
Ecology
Getting Rid of Carpenter Ants without Dangerous Pesticides
How to get rid of carpenter ants without dangerous pesticides.
Jun 24, 2008, 21:11 PST
Ecology
Water Conservation Tips in a Drought
It's easy to take for granted a resource that is abundantly available in our daily lives. But the ease with which we can access this vital commodity often obscures the reality that it is in fact a limited resource.
Jun 16, 2008, 19:18 PST
Astronomy
Moon Illusion on the Summer Solstice
Sometimes you just can't believe your eyes. This week is one of those times. On Wednesday night, June 18th, step outside at sunset and look around. You'll see a giant form rising in the east. At first glance it looks like the full Moon. It has craters and seas and the face of a man, but this "moon" is strangely inflated. It's huge! You've just experienced the Moon Illusion.
Jun 16, 2008, 19:08 PST
Ecology
Bugged By Global Warming
Bugs. They want us to eat bugs. I speak of a recent article in Time that explains why eating bugs is good for the environment...
Jun 16, 2008, 18:43 PST
Ecology
Scientists Sign Petition Opposing Global Warming Alarmism
As the Senate prepares for floor debate on global warming legislation, the list of scientist signatories to the Oregon Institute of Science and Medicine’s petition against global warming alarmism is growing by about 35 signatures every day, announced OISM’s Art Robinson.
Jun 2, 2008, 20:45 PST
Ecology
Coral Reefs at the Academy of Sciences
If you’re looking for something that’s going to be a spectacular sight, the coral tank at the new California Academy of Sciences building is soon going to have something that will fit the bill inside their walls.
May 27, 2008, 19:29 PST
Astronomy
Cartwheel Coronal Mass Ejection
A Coronal Mass Ejection or CME is a billion ton expulsion of gas from the surface of the sun. Take a look at what was different about the recent CME caught on film by NASA.
May 27, 2008, 18:13 PST
Astronomy
Phoenix Lands On The Moon
NASA's Phoenix spacecraft landed on Mars Sunday, May 25th, to begin three months of examining an arctic site chosen for its likelihood of having frozen water within reach of the lander's robotic arm.
May 26, 2008, 09:35 PST
Ecology
China's Olympics Going Green
The 2008 Summer Olympics in China are drawing a lot of attention right now for political reasons. I’ve heard, though, that one ray of light is China’s effort to make the event as green as possible. What’s going on in that regard?
May 26, 2008, 09:21 PST
Chemistry
Rice in your gas tank: Boosting biofuel production from rice straw
Researchers in China are reporting a discovery that could turn rice straw into an inexpensive new renewable source of biofuel. Their new study, scheduled for the July 16 issue of ACS' bimonthly journal Energy & Fuels, describes a way to boost production of biofuel from rice straw by almost 65 percent.
May 25, 2008, 17:16 PST
Ecology
Bottled Water Backlash
Bottled water is out, and tap water is in, says the May/June 2008 cover story of E – The Environmental Magazine (now posted at: www.emagazine.com). Call it reverse snob appeal. These days, it’s the tap water enthusiasts, concerned about the environment, who get to act self-righteous. Just like it has become cool to bring your own cloth bags to the grocery store and your own mug to the coffee shop, the reusable water bottle is the hip, new eco-accessory.
May 7, 2008, 22:37 PST
Chemistry
A Simple Interactive Periodic Table
If you need a simple interactive periodic table, this one will be perfect. You'll find out the element's Name, Number, Weight, Melting Point, and Boiling Point.
May 6, 2008, 20:29 PST
Chemistry
The Best Periodic Tables
Some of the most interesting periodic tables on the Internet are brought together in this collection. If you are studying chemistry, this is not to be missed.
May 6, 2008, 17:39 PST
Chemistry
Advanced Interactive Periodic Table
Download this excellent periodic table from Los Alamos National Laboratory. It will take awhile to download if you're on a dial-up (2.8 mb), but if you're studying chemistry it's a great tool to have!
PDF format - Adobe Acrobat required [ Download/View File ]
May 6, 2008, 09:16 PST
Chemistry
Periodic Table of the Elements (with atomic mass)
This great periodic table is ready to use here on ClassBrain. For each element it includes the atomic number and atomic mass easily visible, then if you click on the element, you'll find everything else you need for your Chemitry assignments.
May 6, 2008, 05:23 PST
Ecology
Low Environmental Impact Seafood
How can I find out which seafood to avoid if I am concerned about lessening my impact on the environment and avoiding consuming unhealthy pollutants?
Apr 6, 2008, 17:04 PST
Ecology
Measure Your Environmental Impact
One of the first things you have to do before you can address a problem like global warming to get some sort of an idea of how severe the problem is. In this case, what is your impact on CO2 emissions?
Mar 31, 2008, 10:30 PST
Ecology
Turn Out Your Lights Tonight For Earth Hour
Participate in Earth Hour on March 29th, 2008 by turning off your lights for one hour from 8PM to 9PM. When this took place in Sidney, Australia in 2007 the reduction in greenhouse gases was equivalent to taking 48,000 cars off the road.
Mar 29, 2008, 12:00 PST
Ecology
Urban Parrot Colonies
At least three dozen different parrot species are now considered threatened or endangered in their quickly shrinking native tropical and sub-tropical habitats (mostly in South America). As such, the health of wild flocks in the U.S. and other developed countries around the world may well be key to preserving these birds that could otherwise go extinct.
Mar 22, 2008, 15:24 PST
Ecology
Recycling Old Clothes
The typical U.S. city with 50,000 residents has to pay (with local tax dollars) for the handling and disposal of some 3,000 tons of textiles every year. The shame of such waste is that textiles are so easy to recycle or otherwise find new uses for.
Mar 22, 2008, 15:11 PST
Astronomy
The Vanishing Rings of Saturn
The rings of Saturn have narrowed visibly in the last year. Are they disappearing? Four hundred years ago, the same phenomenon puzzled Galileo.
Mar 18, 2008, 20:47 PST
Ecology
Earth-friendly Chocolate
I heard a reference to “Earth-friendly chocolate” and was wondering about what goes into chocolate that would raise environmental concerns? -- Ben M., Providence, RI
Feb 3, 2008, 19:33 PST
Ecology
What is the status of sharks around the world?
Humans do a lot more damage to shark populations than vice versa. Marine biologists report that sharks are in rapid decline around the world. In the North Atlantic Ocean, shark populations have declined more than 50 percent over the past 20 years alone, with some species now nearing extinction.
Jan 26, 2008, 11:11 PST
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