Kersey Sturdivant

Fun Science FRIEDay – Weaponized Insulin

April 3, 2015March 31, 2015 Kersey Sturdivant

Uncategorized

Most people have heard of cone snails. They are the genus of venomous marine snails that shoot a poisonous “dart” (hypodermic-like modified radula tooth attached to a venom gland) to attack and paralyze their prey before feeding on it. Smaller cone snails primarily hunt and prey on marine worms, while the larger ones hunt fish. To humans the sting of a smaller cone snail is similar to that of a bee, but contact with larger cone snails can be fatal! Basically they are the badasses of the snail world.

Cone snails are venomous! Their toxin is estimated to be 1,000 times more powerful than morphine. (Photo credit: http://www.siart.karoo.net)

Fun Science FRIEDay – Ocean Acidification, More Than Just pH

February 27, 2015February 19, 2015 Kersey Sturdivant

Uncategorized

You have probably heard that as the global climate changes due to human influence the sea surface is going to rise and the oceans will get warmer and more acidic. The bit about the oceans increasing in acidity is particularly troubling because it implies calcium carbonate based organisms (oysters, snails, corals, etc.) will simply dissolve in this future dystopian acid-ocean (that is a bit of an oversimplification, but you get the idea).

Ocean acidity is determined by measuring the pH, which relates acidity based on the number of hydrogen ions found in the water. So long story short, as more and more carbon dioxide (CO2) is emitted into the atmosphere, it in-turn fluxes into the oceans forming carbonic acid which results in the release of hydrogen ions lowering the pH. Simple logic would suggest that this spells bad news for calcifying organism (poor Mr. Snail).

Healthy Pretopod shell (left) and degraded Pteropod shell due to ocean acidification (right). (Photo credit: NOAA [climate.gov])

Fun Science FRIEDay – Evolution, what’s it good for?

February 20, 2015February 19, 2015 Kersey Sturdivant

Science, Uncategorized

It is widely accepted that the world around us is changing, and as a result the organisms that exist adapt with that change or are resigned to the fossil record. Evolution, it’s a fact of life… or is it? UCLA paleobiologist J. William Schopf, and colleagues, have discovered an organism that has remained relatively unchanged over a 2.3 billion year period. Meh, who needs evolution? These bacteria were discovered in the muddy sediments of the deep sea and represent the greatest lack of evolution ever seen!

1871 editorial cartoon depicting Charles Darwin as an ape. (Photo credit: Unknown artist in 1871 from The Hornet newspaper - no longer in publication) — 1871 editorial cartoon depicting Charles Darwin as an ape. (Photo credit: Unknown artist in 1871 from The Hornet newspaper – no longer in publication)

Fun Science FRIEDay – I can SEE what you’re thinking!

February 13, 2015February 6, 2015 Kersey Sturdivant

Uncategorized

Humans are edging closer and closer to telepathic communication where one human communicates with another purely from thinking. Wait… what’s that you say? We are already there?! Like something out of a sci-fi thriller neuroscientists in Europe and America demonstrated the viability of direct brain-to-brain communications in humans.

"Brain-to-brain (B2B) communication system overview. On the left, the BCI subsystem is shown schematically, including electrodes over the motor cortex and the EEG amplifier/transmitter wireless box in the cap. Motor imagery of the feet codes the bit value 0, of the hands codes bit value 1. On the right, the CBI system is illustrated, highlighting the role of coil orientation for encoding the two bit values. Communication between the BCI and CBI components is mediated by the internet." (Photo credit: Grau et al. 2014) — “Brain-to-brain (B2B) communication system overview.
On the left, the BCI subsystem is shown schematically, including electrodes over the motor cortex and the EEG amplifier/transmitter wireless box in the cap. Motor imagery of the feet codes the bit value 0, of the hands codes bit value 1. On the right, the CBI system is illustrated, highlighting the role of coil orientation for encoding the two bit values. Communication between the BCI and CBI components is mediated by the internet.” (Photo credit: Grau et al. 2014)

Fun Science FRIEDay – Those Genes Look Tasty

February 6, 2015February 6, 2015 Kersey Sturdivant

Uncategorized

In a very basic sense there is a general dichotomy in the grouping of organisms on this planet as either a plant or as an animal. Myself, like most of the rest of you, belong to the animal group, but there are those organisms out there that exists on the boundary; one in particular is the sea slug, Elysia chlorotica.

The sea slug Elysia chlorotica (Photo credit: Patrick Krug)

Happy Fun Science FRIEDay – Change you DNA… One Step at a Time!

January 31, 2015 Kersey Sturdivant

Science

It’s around about this time of year when people begin to question their New Year’s resolutions to commit to better health. You know what I am talking about. Right after NYE the number of people at the gym swells to an unholy number of hopeful fitness do-gooders. Yet without fail, by the end of the month the gym population begins to stabilize back to its pre New Year’s resolution numbers. But maybe, just maybe, this article will convince you to stick with your commitment to better health, change your DNA regarding your approach to fitness, and keep on exercising! Because exercise, as a new study has found, does just that. Exercise changes the shape and functioning of our genes, an important step on the way to improved health and fitness!

Fun Science FRIEDay – Darwin Says Survival of the… empathetic?!

January 23, 2015 Kersey Sturdivant

Blogging, Science

Dacher Keltner, professor of psychology and founding faculty director of the Greater Good Science Center at UC Berkeley has been pushing an idea – Humans are built to be good, because it aids in human survival.

Photo credit: ThinkGeek @ shirtoid.com — Photo credit: Berkeley Social Interaction Lab, UC Berkley

Fun Science FRIEDay – Cell Hijack!

December 12, 2014 Kersey Sturdivant

Uncategorized

Happy Fun Science FRIEDay!!

This week we bring you work from researchers at the Massachusetts Institute of Technology (MIT), where they discovered a new method to “hijack” cells. Think about it, if we could make our own cells do our bidding, we could reprogram them to do all sorts of wonderful things for us, such as manufacture insulin, attack tumors, etc. But hijacking a cell is no easy venture. In nature viruses can be quite efficient at hijacking cells, and because of this current methods employed by researchers to hijack cells entails penetrating the cell’s wall with a virus. The biggest issue with this method is that it tends to inflict permanent damage on cell.

Image of a virus attacking a host cell. (Photo credit: dbscience3 @ https://dbscience3.wikispaces.com/Sienna)

Fun Science FRIEDay – Beauty Sleep

November 28, 2014November 27, 2014 Kersey Sturdivant

Blogging, Uncategorized

Happy Fun Science FRIEDay!!!

It’s the Turkey Holiday, and aside from eating and socializing, I suspect quite a many of you have also been getting lots of sleep!

Despite how little of it some of us get during our normal routine, sleep is important… right? We know that sleep has tons of benefits for the body such as allowing our muscles and bones to repair themselves, and keeping our immune system healthy. Sleep is also important for our brains, allowing for memories to be consolidated and other important functions to be performed.

Sleeping is like recharging your batteries. ^u^ (Photo credit: Chibird, http://rebloggy.com/post/cute-sleep-animation/42472951026) — Sleeping is like recharging your batteries. ^u^
(Photo credit: Chibird, http://rebloggy.com/post/cute-sleep-animation/42472951026)

Fun Science FRIEDay – Death Star

November 21, 2014November 21, 2014 Kersey Sturdivant

Blogging

Happy Fun Science FRIEDay!

While Ebola wreaks havoc on Homo sapiens in the terrestrial world, there has been an even more virulent disease causing the destruction of a marine animal, the sea star. Today we talk about this deadly condition impacting sea star populations and the recent discovery of just what is causing this affliction.