This Week: Death of the mastadon
In the News: Antarctic ozone hole: 10th largest on record!
Coming Thursday: Return of the wild: Coyotes, bears and turkeys are back!
Yes, this is a real picture. More accurately, it’s 165 pictures pasted together from NASA’s Cassini spacecraft’s flyby of Saturn as the planet between the probe and the sun. From this unique vantage point, the contrast of light and shadow enabled astronomers to discern new bands of ice and dust — perhaps the remnants [...]
Buried 1000 meters under the city of Hida, Japan, and packed with 11,146 photomultiplier tubes, the Super Kamiokande detector is set up to capture the presence of what may be the universe’s most bashful particle. The ghost-like neutrino has no electrical charge and a near zero mass. That means it doesn’t like to play [...]
No, that’s not a cover of a 70s-era psychedelic rock album. But if you were thinking “Dark Side of the Mushroom,” you’re closer than you think. This is a dark photo of a bioluminescent bunch of Mycena lucentipes mushrooms. They’re an especially radiant species of the 65 different mushroom varieties known to glow.
Why does this [...]
This CSI is a scanning electron micrograph of the snout of a butterfly. Conveniently coiled when not in use, the long proboscises of butterflies are used to drink and obtain nectar and other nutrients from flowers. This pretty picture was obtained with the aid of a scanning electron microscope, a microscope that scans a [...]
The progenitor of canine parvovirus, shown here in glorious molecular detail, once afflicted only cats and their relatives. But in the 1970s, the cat virus reconfigured just two or three surface amino acids and unleashed a plague upon dogs everywhere.
All viruses, whether they infect plants, animals or bacteria, are utterly dependent on living host [...]
Tissue, please… In honor of the sneezin’ season, this CSI is common ragweed pollen as seen under a microscope. Ragweed pollen is the principal cause of hay fever and can also trigger asthma. But for all the itchy throats and watery eyes, this tough little plant is just trying to survive.
The common [...]
This CSI is Salvinia molesta, or Giant Salvinia, a fast-growing, free-floating aquatic fern that is native to Brazil. Instead of roots, the Salvinia uses a three-leaf or frond approach: two water resistant fronds float atop the surface while the third frond is divided into sections and submersed in the water, serving as a “root.”
This giant [...]
Atomic cameras at the Howard Hughes Medical Institute have captured a new model of the human papillomavirus (HPV). The picture may be more of this cancer causing bug than you ever wanted to see, but it gives scientists a valuable closeup. The picture shows, for example, that the virus may look a [...]
While wandering on the beach recently, those of us at The Why Files got a little bugged out by the sight of a line, roughly a foot wide and stretching for miles down the sand, of Asian Lady Beetles-a ladybug-like insect originally imported from Asia as a biological tool for pest control. [...]
This composite image of a fruit fly embryo at a very early stage of development helps tell scientists how genes govern an animal’s body plan. Using a confocal microscope and three fluorescently-labeled gene products — one red, one blue and one green — biologists can observe cells as they are told by such genes which [...]