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reproduction

Studying the reproductive timing of corals. The image was prepared using DALEE and should not be considered a scientific image

Citi coral and village coral

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Prof. Oren Levy researches the timing of the reproduction of corals around the world and is surprised by Dioc. However the biological clock of the corals is not adapted to the volume lights
A rock rabbit in the Ein Gedi reserve. Illustration: depositphotos.com

The social network of the rock bunnies

Tracking social mammals has allowed scientists to understand how they choose a way of behavior that promotes their ability to reproduce
Mice. Illustration: depositphotos.com

Mice with two fathers: Scientists create eggs from male cells

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The researchers behind the new study were able to create baby mice with genetic material from two males without any genetic changes. They achieved this by using stem cells to create primordial germ cells (PGCs), which differentiate into sperm and egg.
The body bones of various chameleons glow through their skin under ultraviolet light. Photo: Prötzel et al., Scientific Reports, CC BY 4.0

The chameleon in disguise

The decoration of chameleons is not limited to their outer part - and the bones of many of them glow through their skin under ultraviolet light. This is how the chameleons never stop surprising with original costumes that can be an inspiration for our most colorful holiday
Baking yeast. Illustration: depositphotos.com

Genetic research has revealed: this is how the "antenna" of the yeast works

The new discovery could shed light on the basic mechanisms that control sugar metabolism in other organisms, including humans.
Diagram showing the neural circuit for sensing danger in the female worms (above), the male worms (center), and the transgenic male worms (below) which adopted female behavior following the creation of a connection between two nerve cells in the circuit

Scientists added only one connection between two nerve cells in worms. This was enough to turn male behavior into female

The research findings illustrate how changing the synapse map may lead to a change in behavior
Dr. Or Spiegel and Dr. Neely Englister during the release of eagles in Carmel. As part of the monitoring, blood and urine samples are taken to monitor diseases in the population. Photo: Tubel'a Solomon

Is there an eagle in the sky?

The researchers who are trying to save the biblical eagle from extinction in Israel
Earth's population. Image: depositphotos.com

8 billion people: why trying to control population is often futile - and harmful

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"Instead of wondering if we have too many or too few people, we should ask how we can sustainably meet the needs of the people who are already alive"
Prof. Noa Shankar diving (Photo: Hadas Zion)

Plastic chemical additives pollute the corals and harm their development

The harmful chemicals can be found in a wide variety of consumer products such as food packaging, toys, medical devices, adhesives and more
The danger of extinction may be real for the lizards, and this is due to the climate crisis that causes a shortening of their lifespan. Photo: Ocrdu, CC BY-SA 4.0

The lizards are born old

A new French study found that lizards living in France were born "older". It is not about a sequel to "The Amazing Story of Benjamin Button", but about another item on the list of damages from the climate crisis
protein folding. Image: depositphotos.com

Between environmental change and curing diseases

A liquid-viscous environment helps the folding of proteins and their proper functioning
Bushmen in Africa light a fire together. Image: depositphotos.com

Good by Nature 2: Four Billion Years of Cooperation

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In a symbiotic reorganization, the organism functions much better than its individual cells or parts.
Development of artificial embryos in vortexed laboratory beakers, from day 5 (top left) to day 8 (bottom right)

The synthetic embryo developed under the leadership of Weizmann researchers: a senior researcher in the field explains why this is a breakthrough

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Many pregnancies are terminated at the stage when the fetus is implanted in the uterus and begins to develop. The discovery will make it possible to investigate this phase in detail
Pictures from the coral reef in the Gulf of Eilat. Photo: Dror Tsurel Ministry of Environmental Protection

The collapse of the coral reef in Eilat worsened because of the storm in 2020; Extinction of marine species and increase in sea temperature

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Alarming findings regarding the future of the Gulf of Eilat: the coral reef in the Gulf of Eilat is having difficulty recovering from the damage of the 2020 winter storm, which hit the bay and caused the coral colonies in the reef to break and be covered with sand; continued decrease in the percentage of coral cover; Gulf water temperature continues to rise; The Minister of Environmental Protection: "The question marks regarding the future of the Gulf of Eilat require us to take zero risks"
The Prussian carp. Virgin reproduction with a twist. Courtesy of researchers from the University of Innsbruck, Austria

Female Prussian carp steal sperm from related species

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Sea turtles in the Nahal Alexander reserve. Image: depositphotos.com

Caution: Israeli nature is in danger of extinction

The main factors and processes that affect the state of nature in Israel, as a result of human activity, were published
Prof. Carmit Levy. Photo: Tel Aviv University spokesperson

Man, don't you have an appetite? go out in the sun

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A study found that men who are in the sun eat more
Coral reef in the Red Sea. Image: depositphotos.com

What will be the lifeline of the coral reefs in the deep and shallow waters?

A new study estimates that there is little basis for the hope that coral reefs at great depth will help the survival of corals in shallow waters
Return to normal after the corona virus (has not yet fully occurred as of the day of writing the news) Photo: depositphotos.com

Back to normal?

Is the routine good for us or maybe we are better off without it? And could it be that a new one that we haven't met yet is about to devour all the cards?
Prof. Oded Ravavi. Photo: Tel Aviv University spokesperson

Can high temperature accelerate the rate of evolution?

Researchers from Tel Aviv University demonstrated with the help of worms that epigenetic inheritance of sexual attraction can influence the process of evolution
Implementation of a transmitter connected to the "Atlas" system, which was recently developed at the Minerva Center for Traffic Ecology at the Hebrew University. Photo: The Hebrew University spokeswoman

Data-rich tracking technologies enable new tools to save endangered wildlife

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An article published in the scientific magazine Science, led by Prof. Ran Natan from the Hebrew University, shows how the "Atlas" system and other data-intensive (big data) tracking systems help to research and preserve wild animals in a world where the climate and environment are rapidly changing due to human activity * The system also helped after the research With the avian flu outbreak that affected the cranes
Darwin Adventures in the Galapagos Islands. Illustration: depositphotos.com

From Darwin to mate selection

This week, February 12, we celebrated the birthday of Sir Charles Darwin, one of the most influential figures in the history of science, who was born in 1809. His book 'The Origin of Species', published in 1859, presented a revolutionary answer to one of the basic questions that have occupied naturalists for centuries: How do new species form in nature?
Doomsday of the dinosaurs. Illustration: depositphotos.com

Last Spring of the Dinosaurs: Groundbreaking Study Pinpoints the Season of the Chicxulub Asteroid Collision

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Groundbreaking research confirms the time of year when an asteroid wiped out the dinosaurs and 75% of life on Earth
A male lemur with clearly visible antibrachial glands on its wrists. Credit: Chigusa Tanaka, Monkey Center of Japan.

Not just humans: the male lemur emits a fruity-smelling perfume to attract potential mates

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In a new study by a team of researchers from the University of Tokyo published in the journal Current Biology, three different chemical compounds were identified as being responsible for the fruity body odor that the male lemur emits during the annual breeding season to become more attractive and attract potential mates, just like humans use perfumes.
The "chip" whose operation restores the menstrual cycle. Source: Northwestern Medicine.

A monthly cycle "on a chip" provides a window into female physiology

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