Tag Archives: Biology

2023: Top Discoveries In Biology & Neuroscience

Quanta Magazine (December 21, 2023): 2023’s Biggest Breakthroughs in Biology and Neuroscience.

Video timeline: 00:05 The Investigation of Consciousness – Our minds are constantly taking in new external information while also creating their own internal imagery and narratives. How do we distinguish reality from fantasy? This year, researchers discovered that the brain has a “reality threshold” against which it constantly evaluates processed signals. Original paper: “Subjective signal strength distinguishes reality from imagination”

04:30 Microbiomes Evolve With Us – This year, scientists provided clear evidence that the organisms in our microbiome —the collection of bacteria and other cells that live in our guts and elsewhere on our body — spread between people, especially those with whom we spend the most time. This raises the intriguing possibility that some illnesses that aren’t usually considered communicable might be.

08:43 How Life Keeps Time – The rate at which an embryo develops and the timing of when its tissues mature vary dramatically between species. What controls the ticking of this developmental clock that determines an animal’s final form? This year, a series of careful experiments suggest that mitochondria may very well serve dual roles as both the timekeeper and power source for complex cells.

Health: How Organs In Our Bodies Age Over Time

WIRED (November 13, 2023) – Dr. Jeffrey Laitman joins WIRED to break down how our organs and body parts age from head to toe. From hearing and hair loss to sagging skin and deteriorating joints, Dr. Laitman highlights the impact of aging on the human body—and what we can do about it.

Director: Lisandro Perez-Rey; Director of Photography: Francis Bernal

Research: Lena Pernas PhD On ‘How Mitochondria Protects Us From Disease’

TEDx Talks (November 4, 2023) – Approximately 1.5 billion years ago, a lone bacterium found its way into a larger cell. The exchanges that transpired between the two are considered to have driven the evolution of this bacterium into the organelle we now call the mitochondrion.

Emerging research suggests that mitochondria are not simply the ‘powerhouses’ of the cell, but also function as cellular guardians against microbial intruders. Consequently, maintaining mitochondrial health is not only vital for our well-being, but may serve to protect us against infectious disease.

Dr. Lena Pernas started as a Max Planck Research Group Leader at the MPI Biology for Ageing (Cologne, Germany) in late 2018, where her lab investigates the organelle and metabolic dynamics of the host-pathogen interaction. Her lab will open its doors at UCLA in the Metabolism Research Theme in 2023.

Research: What Happens To Your Brain As You Age

The Economist (November 2, 2023) – As the most complex organ in your body, your brain changes radically throughout your life. Starting from before birth and continuing even after you’ve died. This is what happens to your brain as you age.

Video timeline: 00:00 – What happens to your brain when you age? 00:32 – In the womb 01:03 – Childhood 03:19 – Teenage years 04:48 – Early adulthood 05:27 – Middle age 07:04 – Later life 07:36 – Death

Science: Fiber Optic Cables Detecting Seismic Activity, The Oil & Water Interface

Geoscientists are turning to fiber optic cables as a means of measuring seismic activity. But rather than connecting them to instruments, the cables are the instruments. Joel Goldberg talks with Staff Writer Paul Voosen about tapping fiber optic cables for science.

Also this week, host Sarah Crespi talks with Sylvie Roke, a physicist and chemist at the Swiss Federal Institute of Technology, Lausanne, and director of its Laboratory for fundamental BioPhotonics, about the place where oil meets water. Despite the importance of the interaction between the hydrophobic and the hydrophilic to biology, and to life, we don’t know much about what happens at the interface of these substances.

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.