Category Archives: Science
Science Podcast: Million-Year-Old Mammoth DNA, Art In Science & Jupiter
Researchers sequence the oldest DNA ever recovered, and the people bringing art and science together.
In this episode:
00:46 Million-year-old mammoth DNA
This week, researchers have smashed a long-standing record by sequencing a genome that’s over a million years old. They achieved this feat by extracting DNA from permafrost-preserved mammoth teeth, using it to build-up a more detailed family tree for these ancient animals.
Research Article: van der Valk et al.
News: Million-year-old mammoth genomes shatter record for oldest ancient DNA
News and Views: Million-year-old DNA provides a glimpse of mammoth evolution
10:00 Research Highlights
A spacecraft catches a rare glimpse of a rock smashing into Jupiter, and the perilous state of sawfish populations.
Research Highlight: Robotic eyes spy the flash of a meteor on Jupiter
Research Highlight: Humans push a hulking fish with a chainsaw nose towards oblivion
12:18 Putting art into science (and science into art)
Art and science are sometimes considered disparate, but when brought together the results can be greater than the sum of their parts. This week we hear from an artist and a scientist on the benefits they found when crossing the divide.
Career Feature: How to shape a productive scientist–artist collaboration
Career Feature: How the arts can help you to craft a successful research career
Where I work: ‘All my art is curiosity-driven’: the garden studio where art and physics collide
21:43 Briefing Chat
We discuss some highlights from the Nature Briefing. This time, a neanderthal gene makes brain-like organoids bumpy, and uncovering the original location of Stonehenge’s stone circle.
Medical Research: ‘Next Generation Vaccines’
Vaccine science and technology is advancing. Next generation vaccines could change how we combat infectious diseases, and it’s important to understand how the technology works.
Video: ‘How Covid-19 Vaccines Are Tested’
Vaccines are rigorously studied and tested — but there are challenges along the way.
Covid-19: Penn Medicine Explains mRNA Vaccines
Vaccines are about to change the world…again. mRNA Vaccines are currently being used to battle COVID-19, and have the potential to eradicate diseases like HIV, herpes, sickle cell anemia, and even cancer. Learn how the vaccines work and where the technology could be headed in this explainer video.
Currently, the Pfizer-BioNTech and Moderna vaccines for COVID-19 use the mRNA technology developed at Penn by infectious disease expert Drew Weissman, MD, PhD, along with longtime research collaborator Katalin Karikó, PhD, an adjunct associate professor. Dr. Weissman has been studying mRNA vaccines for decades. This technology could change the way future vaccines are made to prevent countless other diseases.
Science Podcast: Africa’s Great Green Wall, Whale Songs Image Ocean Floor
Science journalist Rachel Cernansky joins host Sarah Crespi to talk about progress on Africa’s Great Green Wall project and the important difference between planting and growing a tree.
Sarah also talks with Václav Kuna, a postdoctoral researcher at the Institute of Geophysics of the Czech Academy of Sciences, about using loud and long songs from fin whales to image structures under the ocean floor.
TOP JOURNALS: RESEARCH HIGHLIGHTS FROM SCIENCE MAGAZINE (FEB 12, 2021)
Wildlife Science: ‘Why Cheetahs Are So Fast’
Cheetahs are the fastest land animals on Earth. So what’s the secret to their incredible speed?
A cheetah has a short muzzle, small canines, and other features to help reduce the overall weight of its head. All this results in a skull that weighs around 500 grams. That’s just over a pound. Now, cheetahs need this light skull to make space for a large nasal cavity. Because cheetahs need LOTS of oxygen. To help meet this need, they have large nostrils that allow for quick and large intakes of air while the cheetah’s large chest holds its lungs and heart, which work together to help circulate the oxygen throughout its body. And that’s crucial, since a cheetah can take anywhere between 60 to 150 breaths per minute. This is a drastic increase, since at rest, a cheetah takes in about 9 breaths per minute. That means that when these cats really get going, their breathing rate goes up to SIXTEEN TIMES faster. What’s even more fascinating is that while running, you’ll notice that a cheetah’s head doesn’t move. It stays incredible still.
Science: ‘Insane Biology Of Ant Colonies’ (4K Video)
Ants are social insects which form small to large colonies. A typical colony contains an egg-laying queen and many adult workers together with their brood (eggs, larvae and pupae). Workers are by far the most numerous individuals in the nest. They are responsible for nest construction and maintenance, foraging, tending the brood and queen, and nest defence.
While all workers are female, they are sterile and do not lay eggs. Winged queens and males are present in the nest for only a short period. Soon after emerging they leave the nest to mate and establish new nests. Queens are generally similar to the workers, differing primarily in having larger bodies. In some species, fully winged queens are lacking and egg-laying is undertaken either by typical workers or by individuals which are morphologically intermediate between typical queens and workers (these are called ergatoid queens). Males are generally about the same size as the workers or smaller, and have smaller heads with large ocelli, very short scapes and small mandibles. In many cases males look more like wasps than ants.
Covid-19: Understanding The New Variants & New Vaccines Effectiveness
Researchers are scrambling to understand the biology of new coronavirus variants and the impact they might have on vaccine efficacy.
Around the world, concern is growing about the impact that new, faster-spreading variants of the SARS-CoV-2 virus will have on the pandemic.
In this episode of Coronapod, we discuss what these variants are, and the best way to respond to them, in the face of increasing evidence that some can evade the immunity produced by vaccination or previous infection.
News: ‘A bloody mess’: Confusion reigns over naming of new COVID variants
News: Fast-spreading COVID variant can elude immune responses
News: Could new COVID variants undermine vaccines? Labs scramble to find out
News: How to redesign COVID vaccines so they protect against variants
News: J&J’s one-shot COVID vaccine offers hope for faster protection
Boomers Daily 