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.
Watch the skies! The peak of the Perseid meteor shower takes place overnight tonight! The bright quarter Moon will limit the number of shooting stars you'll see but you can still expect around 15-20 per hour depending on where you're at. The meteors are debris from Comet Swift-Tuttle burning up in Earth's atmosphere at speeds […]
"The U.S. has reached a landmark of sorts in its so far not very successful battle with the virus that causes Covid-19 — most Americans now know someone who has been infected," writes Justin Fox at Bloomberg, about coronavirus social data from Navigator Research, shown above.
Researchers successfully revived ancient microbes, some more than 100 million years old, that were buried in the seafloor. During an expedition to the South Pacific Gyre, the scientists from the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and their colleagues drilled into the ocean sediment almost 6,000 meters below the surface. "Our main question […]
Vacuum cleaners have come a long way since those giant bulky bag behemoths that used to take up most of the hall closet. Machines that handle that kind of cleanup now have to be more than just carpet sweepers. They need to be small, powerful, convenient, and capable of handling a variety of big and […]
Everybody's got a story. Unfortunately, not everybody has the tools to tell that story the right way. That's especially true for someone looking to produce their first screenplay. Just as with any type of writing, penning a script for the screen has a set of rules all its own. Understanding that structure, as well as […]
Even as the world takes tentative steps toward reopening against the ebbs and flows of COVID-19, movie theaters remain in a netherworld limbo. High-profile film releases continue shuffling as theater chains, studios and filmgoers grapple with the fact that an enclosed theater may not be a safe place to be for some time to come. […]