A new study has revealed a surprising outcome from increases of carbon dioxide uptake in the oceans: anxious fish.
The first day of winter for the Northern Hemisphere comes on December 21, 2013. However, for Canada and the United States, old man winter has decided to arrive closer to the start of meteorological winter (December 1). Some of the coldest Arctic air we have seen in years is pushing to the south. It is bringing temperatures 30 to 50 degrees below average in parts of the north-central United States. Snow and a significant ice event is likely all the way from parts of North Texas into the Great Lakes and Northeast over the next several days. There will be extremes all across the United States for this first week of December. If you like roller coasters, then you will enjoy this crazy ride.
Astronomers have spotted what appear to be two supermassive black holes in a remote galaxy 3.8 billion light-years from Earth, circling each other like dance partners.
The winter solstice is the shortest day, but the earliest sunsets come a couple of weeks before the solstice. That’s true for both hemispheres. If you’re in the Northern Hemisphere your earliest sunsets will be in early to mid-December. If you’re in the Southern Hemisphere, your earliest sunrises are coming now.
Here’s the moon on December 1, a waxing crescent moon in the evening sky. You’ll see a moon much like this, but with an increasingly fatter crescent, in the coming evenings.
Behold the young moon in close vicinity to the brilliant planet Venus in the western twilight some 30 minutes (or sooner) after sunset. These two worlds burst onto the scene before nightfall because the moon and Venus rank as the brightest and second-brightest luminaries of nighttime, respectively. Be sure to catch the dazzling twosome at dusk or nightfall, for they’ll follow the sun beneath the horizon by early evening.
Many are asking: what is that brilliant object shining in the west after sunset now? It’s the beautiful “evening star,” really the planet Venus. It’s the second planet outward from our sun and always the third-brightest object in Earth’s sky, after the sun and moon. Venus is so bright that it sometimes casts a shadow on dark, moonless night. Venus is always bright … but it’s particularly noticeable now because it’s at its brightest on December 6, 2013. It is near what astronomers call its greatest illuminated extent or greatest brilliancy. Follow the links inside to learn more about Venus at its brightest.
A new brain connectivity study from Penn Medicine found striking differences in the neural wiring of men and women. It seems that male brains are structured to facilitate connectivity between perception and coordinated action. Female brains are structured to facilitate communication between the analytical and the intuitive.
Researchers found that when a mouse is trained to become afraid of a certain odor, his or her pups will be more sensitive to that odor, even though the pups have never encountered it.