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Earth science

the oxygen cycle. Image: depositphotos.com

The oxygen dance: the amount of oxygen in the atmosphere rose and fell in significant fluctuations until the appearance of land plants

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The discovery also has value in a completely different field - the search for life on planets outside the solar system
Deep sea sharks in the Palmachim surf. Credit_ The research team led by the University of Haifa, Seas and Lakes Research for Israel and the partner institutions within the Mediterranean Research Center

For the first time, a marine reserve was declared in the middle of the sea: Palmachim surf

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This announcement more than doubles the area of ​​protected marine areas in the maritime space in Israel and is a leap forward in the protection of the unique natural values ​​in the Mediterranean Sea
Floods in Pakistan, 2010. Image: depositphotos.com

Forecasting floods using machine learning with an accuracy of over 90%

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The use of remote sensing technologies from the ground and space together with past data and the use of machine learning are necessary for research to predict extreme weather events
Illustration of a possible mechanism for creating a disturbance in the electron charge density in the ionosphere before an earthquake. From the study

Machine learning of atmospheric phenomena may improve earthquake prediction

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A study by researchers at the university examined data from before earthquakes occurred, in order to predict based on past data when conditions exist that increase the likelihood of an earthquake in a certain area according to atmospheric changes
An asteroid hitting the Earth, the most famous illustration of catastrophe, but the real catastrophe comes from human hands. Image: depositphotos.com

How will humans survive an apocalypse? A new study on the consequences of the corona virus has an answer

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One of the ideas for saving humanity in the event of a deadly epidemic or other major global disaster is to create a safe haven where some people can survive
A stand selling Nile princess fish in Kampala, the capital of Uganda. Image: depositphotos.com

The rise and fall of the Nile princess

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In recent decades - after reaching a peak due to the population of Lake Victoria with the predatory fish that was not there before, the fishing productivity in Lake Victoria is decreasing due to overfishing and mortality due to water pollution. The fish population, which for about 70 years constituted the bulk of the fishing harvest and the bulk of the income for those living around the lake, is dwindling and the fishermen around Lake Victoria are suffering
Building the system together with the local guys

Israelis voluntarily built a water system for 5,000 children in Tanzania

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The Africa team, Engineers Without Borders Israel Tel Aviv branch recently returned from a two-week mission in Tanzania. The project deals with the supply of clean drinking water to rural areas in Africa and has 20 volunteers from diverse fields who manage the project from end to end throughout the year
Antarctica. Photo: depositphotos.com

The time capsule that hides in the ice of Antarctica

An international research expedition is currently drilling in the depths of the Antarctic ice, with the aim of finding out why the ice ages significantly lengthened over a million years ago. Their findings may also help in understanding the rise in global temperatures that we are experiencing today
Morocco: an oasis in the Sahara desert. Photo: depositphotos.com

Pisgah to stop the desert

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According to the head of the climate services of the United Nations World Meteorological Organization (WMO) "even when the amounts of rain remain the same, because of the warming water evaporates and the area dries out
Traffic jam in Tel Aviv, February 2022. Photo: Avi Blizovsky

Feel Tel Aviv from below

Researchers examined what happens under the city's asphalt non-stop - and what seismic tremors cause cars, pedestrians and cyclists
Heavy rain and lightning storms illustration: depositphotos.com

Extreme rains and their risks

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Between rain and flood, between time and terrain, between yesterday and tomorrow
A chain reaction of tectonic plates. Courtesy of the researchers

The movement of the tectonic plates works according to a chain reaction

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An international group of geologists, including researchers from Ben Gurion and Tel Aviv University, discovered a connection between earthquakes in different parts of the world
Thwaites Glacier in West Antarctica. Photo: NASA

Antarctica's "doomsday" glacier: its collapse could cause coastal cities to flood and islands to be swallowed

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Adding 65 cm to the global sea level will completely change the coastlines. To date, the sea level has risen by about 20 cm since 1900, which is already forcing coastal communities out of their homes and exacerbating environmental problems such as flooding, groundwater salinization and habitat loss.
By World Travel Tourism Council - Richard Leakey, photo from 2015. Institute, CC BY 2.0, from Wikipedia

Adventures in Africa: Prof. Yoel Rek of Uni' Tel Aviv paid tribute to Richard Leakey, the naturalist who died this week

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Leakey knew how to discover fossils of ancient human species even as a child, as the son of famous parents, but he also cared about preserving nature and fighting ivory traders, received two kidney transplants and a liver transplant, lost his legs in the crash of his plane, and made important discoveries in the field of human evolution
Boys from the Maasai tribe in Kenya lead their cows to drink water. Illustration: depositphotos.com

A polluting controller?

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In the past I have already referred to the need to reduce meat consumption in the face of the significant differences between the industrial form of farming in large farms in Western countries and nomadic herders, mainly in African countries. They are still not considered
Caesarea National Park beach. Illustration: depositphotos.com

A committee of the National Academy of Sciences recommends a national plan to strengthen and advance the field of marine sciences in Israel

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cab. Illustration: depositphotos.com

Sensors will be placed on taxis in the US to monitor the urban climate

The study seeks to deal with the uncertainty in monitoring the urban climate. Despite being characterized by sharp variations both in time and space, and having significant consequences on the quality of life, the economy and the cost of living, yet it turns out that the urban climate is hardly measured in the city
The archaeological site in Wadi Paynan. Credit: Thomas Levy

Recordings of the magnetic field from 9,000 years ago teach us about the magnetic field today

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Burnt flint tools from prehistoric sites make it possible to determine the strength of the Earth's magnetic field in ancient times. The information about the magnetic field in ancient times may have implications for the understanding of the magnetic field in our time. The researchers: "About 7,600 years ago the strength of the magnetic field was even lower than today, but within about 600 years the field strengthened and rose again to a high level."
The fire in the mountains of Jerusalem against the background of the castle. Photography: Ehud Amir

Against the backdrop of the climate crisis, the fire in the Jerusalem mountains points to the danger of planting

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In the fire in the Jerusalem Mountains that broke out on August 15th, thousands of animals perished and about 25,000 dunams of forest (about 25 square kilometers) burned - more than burned in the Carmel disaster in 2010. Could something be done, especially in view of the worsening climate crisis, in forest planning in Israel?
A building destroyed by an earthquake. Illustration: depositphotos.com

To know the "nucleation point" to predict earthquakes

The findings, according to the research leaders, PhD student Shahar Gebirtzman and Prof. Jay Feinberg from the Rakah Institute of Physics, are the beginning of the answer to the question regarding the existence of earthquakes of different intensities that originate from identical tectonic plates. The research was published in the prestigious journal Nature Physics
diamonds. Courtesy of Dr. Jacob Weiss, Hebrew University

How can through diamonds decipher geological mysteries of over billions of years?

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A team of researchers succeeded, by deciphering the ages of tens and hundreds of millions of years old diamonds, to identify three different periods of their formation at a depth of about two hundred kilometers below present-day South Africa. Dr. Jacob Weiss: "This is a significant step not only in the study of diamonds, but also in the study The evolution of the continents on Earth"
A village in Poland is covered in smog caused by the use of coal stoves. Aerosols. Photo: depositphotos.com

For the first time a connection was found between rain and the concentration of aerosols in the air near the ground

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Seal. . Photo: depositphotos.com

Scientists call for a global action plan: saving the oceans to protect human health

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European scientists have proposed the first steps towards a unified global plan to save our oceans, for human health and the well-being of us all
Anchor at Kedem beach. Photography - Gideon Hadas

An anchor from the time of King Herod initiated the study of the activity of ancient springs and the restoration of the Dead Sea levels over the past thousands of years

The climate crisis. Image: depositphotos.com

Public involvement and political support are essential for success in any country's fight against the climate crisis

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This is according to a study presented as part of an international expert workshop on behalf of the Israel Public Policy Institute (IPPI) and the Ministry of Environmental Protection. The discussion presented guiding principles for climate legislation in Israel, the key elements for effective legislation and what can be learned from countries that have already completed climate legislation
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