TOP 100 CAMPING SITES
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| Water Wars Come to the Andes ICA, Peru - Two decades ago, the strip of sand between the Pacific Ocean and the Andean foothills was empty except for the occasional fig or carob tree. But the northern end of perhaps the world's driest desert – a harsh and unforgiving clime – is now the center of Peru's export agriculture industry. [More] rss.sciam.com |
Fit Body, Fit Mind? Your Workout Makes You Smarter As everybody knows, if you do not work out, your muscles get flaccid. What most people don’t realize, however, is that your brain also stays in better shape when you exercise. And not just challenging your noggin by, for example, learning a new language, doing difficult crosswords or taking on other intellectually stimulating tasks. As researchers are finding, physical exercise is critical to vigorous mental health, too.Surprised? Although the idea of exercising cognitive machinery by performing mentally demanding activities--popularly termed the “use it or lose it” hypothesis--is better known, a review of dozens of studies shows that maintaining a mental edge requires more than that. Other things you do--including participating in activities that make you think, getting regular exercise, staying socially engaged and even having a positive attitude--have a meaningful influence on how effective your cognitive functioning will be in old age. [More] rss.sciam.com |
Are Babies Bad for the Environment? [Below is the original script. But a few changes may have been made during the recording of this audio podcast.] It's no secret that there are more and more of us every day. From less than a billion 200 years ago to more than 6.6 billion people on the planet today. And the United Nations expects more than 9 billion by mid-century. [More] rss.sciam.com |
Recommended: The Age of Empathy The Sibley Guide to Trees by David Allen Sibley. Knopf, 2009 [More] rss.sciam.com |
Searching for the Best Way to Go Green When Traveling Dear EarthTalk: I’m a travel agent and our firm has several clients wanting to go with green vendors, including for travel (airline or rental car) and lodging. Our company is supportive so would like to know which airlines, hotels and car rental agencies are going affordably green? --Carol Biggar, via e-mail [More] rss.sciam.com |