It all started with an e-mail. Three years ago, University College London professor Chronis Tzedakis had just explained the basic cycles of an ice age to an undergraduate geology class; how the Earth goes through periods of glaciation followed by warmer periods when glaciers melt. Sometimes, the timing between those periods varies dramatically.
Nerves are extremely delicate structures. They don't tend to be very flexible and can get injured if they are stretched even the slightest bit too much. At the same time, nerves are needed in areas of the body that put up with a lot of lengthening and straining. Here's an extreme example: When it opens its massive mouth to feed, the rorqual whale's nerves stretch to more than double their resting length and back—all while making extremely sharp 'hairpin'-like turns—without being strained or broken. But how do they get away with treating their delicate nerves like a bunch of bungee cords?
If you had dreams of riding a wooly mammoth through 2019 after reading headlines this week that 'Wooly mammoth will be back from extinction within two years', you might want to change your plans. It's not going to happen.
There's something magical about nature coming together to create a spectacle like Yosemite's firefall. It only happens in mid- to late February, when the skies are clear, the snow is melted, and the proverbial stars align. But just a few years before the firefall became a well-known visual phenomenon, visitors were treated a different firefall every single night—one made of actual fire.
While NSW burns, a snowstorm hammered the Northeast US yesterday, dumping as much as a foot of snow in some places. And while the storm closed schools, grounded flights, and inconvenienced a lot of humans, the animals at the Bronx Zoo couldn't be happier about it. These photos of animals playing in the snow were taken today by zoo staff, and they're the perfect ending to a long week.