In honor of American geologist Dr. Richard Alley's recent election as the Foreign Member of the Royal Society, the National Science Foundation has posted this series of 15 short videos explaining the science behind climate change and starring Dr. Alley.

See video

Vaccine activities: A variety of activities about vaccinations await State Fair visitors at the Minnesota Department of Health's booth in the Education Building of the Minnesota State Fair.
Vaccine activities: A variety of activities about vaccinations await State Fair visitors at the Minnesota Department of Health's booth in the Education Building of the Minnesota State Fair.Courtesy Minnesota Department of Health
Think you can get away from Science Buzz by going to the Minnesota State Fair? Think again. You'll have three different opportunities to see Science Buzz exhibits if you visit the Fair through Labor Day.

At the Education Building, the Minnesota Department of Health will be presenting hands-on and digital activities about the importance of vaccinations. Those activities are available daily from 9 a.m. to 9 p.m.

Visitors to the Eco Experience building can learn about new data and trends on climate change at a computer kiosk being presented by the Minnesota Pollution Control Agency and Science Buzz. It is also open 9 a.m. to 9 p.m. daily. Here's a link to those pages if you can't make it to the Fair.

Also, on Friday, Aug. 29, faculty from the University of Minnesota's Institute for Math and its Applications will be showing a number of hands-on math activities at the university's exhibit building, including the popular Traveling Salesman Problem game board. They will also be presenting from 9 a.m. to 9 p.m. that day. Here's a link to the Buzz's online content on the Traveling Salesman Problem.

This video is both fascinating and unsettling. I feel sorry for the poor little avian dinosaur.

Aug
20
2014

Hot spot: This solar farm in the Mojave Desert in California is igniting birds in flight at an alarming rate. Mirrors on the ground reflect super-hot light to the towers to be converted into electricity.
Hot spot: This solar farm in the Mojave Desert in California is igniting birds in flight at an alarming rate. Mirrors on the ground reflect super-hot light to the towers to be converted into electricity.Courtesy Craig Dietrich - Flickr
A huge solar energy farm in the Mojave Desert seems to be having one serious side effect: passing birds in flight are bursting into flames.

What's going on is that 300,000 mirrors on the ground are directing sunlight to huge towers that convert that energy into electricity. Bugs are attracted to the bright light from the mirrors drawing hungry birds to get into the path of the reflected light. And that concentrated light energy is causing the birds to catch fire, sometimes at a rate of one every two minutes. The flaming birds have been noticed since the plant powered up in February and its estimated that the total bird kill this year could top out at 28,000. Researchers estimated that one bird they found dead had been roasted by light beams that were nearly 1,000 degrees F.

Plans for building a second plant are on hold while investigators study the situation at the current site. What do you think? Is the potential of killing many birds a worthwhile cost for increased clean, "green" electricity?

Aug
18
2014

Hallucigenia sparsa fossil: from the Burgess Shale
Hallucigenia sparsa fossil: from the Burgess ShaleCourtesy M. R. Smith / Smithsonian Institute
One of the strangest and more mysterious critters that scurried across the Middle Cambrian seafloor has baffled paleontologist since it was first identified in the 1970s. Was it a worm? Which side was up? Did it have legs or spikes or both? Was its head actually its tail? Did it have any extant descendents or was it an evolutionary dead-end? The worm-like creature was so baffling and so bizarre, it was given the very apropos name of Hallucigenia.

The tubular, spiked-worm possessed seven or eight pairs of legs and ranged in length from 2/5th of an inch to one and 1/4 inches and looks like something out of a bad dream. Early interpretations of their fossils were all over the map. The stiff spikes on it back were first thought to be its legs, and its legs misidentified as tentacles. What was thought to be its tail ended up being its head.

Using modern imaging technology, researchers from the University of Cambridge have been closely studying fossils from the famous Burgess Shale quarry located high in the Canadian Rockies, and are uncovering Hallucigenia's secrets. By studying the claws at the end of its legs they have been able to link it to modern velvet worms (onychophorans). Scientists have long suspected the two were somehow related but until now have failed to find anything significant to prove it. By studying Hallucigenia's claws they've determined that they're constructed of nested cuticle layers, very similar to how the jaws of velvet worms are organized. The similarity is no surprise since jaws are known to have evolved from a modified set of front legs.

But besides giving Hallucigenia a place in the lineage of life on Earth, the Cambridge team during the course of their study also discovered something else: that arthropods - which include crustaceans, spiders, insects and trilobites - aren't in fact as closely related to velvet worms as previously thought.

“Most gene-based studies suggest that arthropods and velvet worms are closely related to each other," said co-author Dr Javier Ortega-Hernandez. "However, our results indicate that arthropods are actually closer to water bears, or tardigrades, a group of hardy microscopic animals best known for being able to survive the vacuum of space and sub-zero temperatures – leaving velvet worms as distant cousins.”

SOURCE and LINKS

University of Cambridge story
Previous Buzz Post on Hallucigenia
The Cambrian Explosion
More about Tartigrade

This is an excellent TED presentation about how astronomers gather lots of information about the far reaches our universe just by studying light.

This video, alleged by some viewers to show a humanoid figure and its shadow on the surface of the Moon, has gone viral (over 3 million views!). If it is a man or alien being, he's a very, very big boy. It's also been pointed out that his shadow is going the wrong way when compared to shadows made by nearby moonscape features. Fanciful fun, but that's about it.

Here are the co-ordinates (27°34'26.35"N 19°36'4.75"W) if you want to find the exact location yourself on Google Moon, which is accessed under the Saturn-shaped menu in the toolbar of the latest version of Google Earth.

Since we're smack dab in the middle of Shark Week, I thought this would be the perfect time to show the exciting time my niece's husband, Todd Redig, of St. Paul, MN had during a recent Florida fishing trip. I would have loved to been on board to see this. Be sure to watch the slowed down version of the event that's at the end of the video.

NOTE: the clip, understandably, contains some mild expletives.

TED.com supplies some helpful links to help answer your questions.

Henry Fairfield Osborn
Henry Fairfield OsbornCourtesy AMNH via Britannica.com
Today marks the 157th anniversay of the birth of paleontologist and museum curator Henry F. Osborn. Born on this date in Fairfield, Connecticut in 1857, and educated at Princeton University, Osborn was degreed in geology and archaeology and paleontology, and also studied embryology and comparative under Thomas Huxley. He was also mentored by famed 19th century paleontologist Edward Drinker Cope. Osborn taught at both Princeton and Columbia before being hired by the American Museum of Natural History in New York City to head the museum's newly created Department of Vertebrate Paleontology and later serve as the institution's president. Osborn has the distinction of having named one of the world's most famous dinosaurs: Tyrannosaurus rex. Read more about H. F. Osborn here.

ADD'L INFO
Osborn info on Strange Science
Osborn on About
Osborn on Wikipedia