One of the interesting things about the global carbon dioxide and climate systems is the concept of feedback loops. You already know that as atmospheric concentrations of carbon dioxide go up (and with them, the global average temperature) you get lots of different kinds of changes all over the place. For instance, mountain pine forests start experiencing warmer winters and smaller snowpacks. But, as those changes happen, they can actually trigger secondary effects that contribute to, and increase the rate of, climate change.
In this video, you'll learn about how warmer temperatures and lower snowpacks are contributing to the spread of massive pine beetle infestations across the western United States. This is more than just inconvenient. The pine beetles can quickly kill huge amounts of trees, raising the risk of property-destroying forest fires and razing whole ecosystems. And, as the trees die en masse, forests that were once carbon sinks (absorbing more carbon dioxide than they released) become emitters—adding more carbon dioxide to the atmosphere.
NASA today announced that astronomers studying data from NASA’s Great Observatories have found the best evidence yet for “cosmic seeds in the early universe that should grow into supermassive black holes.”
Could you recover a murder victim’s last sight of their killer by extracting it from the retina? Little more than a century ago, forensic scientists thought it might be possible. After all, in 1877 physiologist Wilhelm Friedrich Kühne was able to develop a simple image from an albino rabbit’s dissected eyeball. (Above, the two images […]
Backed by huge donations from vitamin companies, the American Association of Naturopathic Physicians is pushing to get naturopathic medicine recognized and regulated in all 50 US states, paving the way to receiving public funds in the form of Medicare reimbursements.
Jared Sinclair developed the RSS reader app Unread, which made $10,000 in its first 24 hours on the iOS market. And we’ve all heard the story of Flappy Bird developer Dong Nguyen, whose creation was reportedly earning $50,000 a day at the height of its 2013 explosion. While those are rare examples, they’re also testament to the […]
If you or your company’s IT system are besieged by black hat cyber attacks, an ethical hacker might be all that stands between crippling damage and a company’s long-term prosperity. It’s no wonder that the market for IT security specialists is exploding. Certification is the key – so learn the tenets of ethical hacking and get […]
Your laptop and mobile devices are top of the line…so why are you trotting out that raggedy decades-old suitcase when you go somewhere? Time to up your travel game with a complete 5-piece Herschel Travel Luggage bundle…and we’ll even give it to you for free!Of course, you’ve got to win the Ultimate Herschel Travel Bundle […]