Setting Aside ONE THIRD of our Planet for Nature

It's being called a last chance for nature - 100 countries backing calls to protect 30% of the planet.  The aim is to reach this goal by 2030 and conserve forests and other vital ecosystems in order to restore the natural world.  The "30x30" target is the key ambition of the UN biodiversity summit, COP 15

But as the talks in Montreal, Canada, move into their final days, there is division over this and many other targets.  Biodiversity refers to all living things, from polar bears to plankton, and the way they fit together to sustain life on Earth.

Scientists have warned that with forests and grasslands being lost at unprecedented rates and oceans under pressure from pollution and over-fishing, humans are pushing the Earth beyond safe limits. This includes increasing the risk of diseases, like SARs CoV-2, Ebola and HIV, spilling over from wild animals into human populations.

Under the proposed agreement, countries would sign up to targets to expand protected areas, such as nature reserves. It draws inspiration from the so-called "father of biodiversity", the biologist Edward O Wilson, who called for half of Earth to be protected.

But there is debate over how much land and sea to include, and some scientists fear the targets may be diluted.  READ MORE...

Raining Diamonds Across the Universe

Uranus and Neptune, ice giants where scientists believe diamond rain falls below the surface.

It could be raining diamonds on planets throughout the universe, scientists suggested Friday, after using common plastic to recreate the strange precipitation believed to form deep inside Uranus and Neptune.

Scientists had previously theorized that extremely high pressure and temperatures turn hydrogen and carbon into solid diamonds thousands of kilometers below the surface of the ice giants.

Now new research, published in Science Advances, inserted oxygen into the mix, finding that "diamond rain" could be more common than thought.

Ice giants like Neptune and Uranus are thought to be the most common form of planet outside our Solar System, which means diamond rain could be occurring across the universe.

Dominik Kraus, a physicist at Germany's HZDR research lab and one of the study's authors, said that diamond precipitation was quite different to rain on Earth.

Under the surface of the planets is believed to be a "hot, dense liquid", where the diamonds form and slowly sink down to the rocky, potentially Earth-size cores more than 10,000 kilometers (6,200 miles) below, he said.

There fallen diamonds could form vast layers that span "hundreds of kilometers or even more", Kraus told AFP.

While these diamonds might not be shiny and cut like a "a nice gem on a ring", he said they were formed via similar forces as on Earth.

Aiming to replicate the process, the research team found the necessary mix of carbon, hydrogen and oxygen in a readily available source—PET plastic, which is used for everyday food packaging and bottles.

Kraus said that while the researchers used very clean PET plastic, "in principle the experiment should work with Coca-Cola bottles".  READ MORE...

Opening A 830 Million Year Old Crystal

Scientists recently announced the tantalizing discovery of ancient prokaryotic and algal cells – which may potentially still be alive – inside an 830-million-year-old rock salt crystal. Now, the researchers have spoken a little bit more about their recent study and suggested they have plans to crack open the crystal in the hope of revealing whether this ancient life is truly still alive.

Initially reported in the journal Geology earlier this month, the team used a selection of imaging techniques to discover well-preserved organic solids locked within fluid inclusions embedded in an 830-million-year-old piece of rock salt, also known as halite. They argue that these objects bear an uncanny resemblance to cells of prokaryotes and algae.

Crystalized rock salt is not capable of sustaining ancient life by itself, so the potential microorganisms are not simply locked within the crystals, like an ant trapped in amber. As rock salt crystals form through the evaporation of salty seawater, they can trap small amounts of water and microscopic organisms in primary fluid inclusions.  TO SEE VIDEO AND READ MORE, CLICK HERE...

Sugar Beneath the Ocean

Many coastal areas around the world are home to lush green meadows — all thanks to seagrasses.

As the only flowering plants growing in marine environments, these meadows are magic: One square kilometer of seagrass stores nearly twice as much carbon as land-based forests, and it does so 35 times faster. This makes seagrasses one of the most efficient global sinks of carbon dioxide on Earth.

And this isn't the only remarkable thing about them, a new study has revealed. Submerged beneath the waves, seagrass ecosystems hold colossal reserves of sugar we never knew existed before, with roughly 32 billion cans of Coca-Cola's worth of sweet stuff hiding in the seabed.

Naturally, this holds major implications for mitigating climate change and carbon storage.

Sweet, sweet seagrass
Scientists from the Max Planck Institute for Marine Microbiology in Bremen, Germany, reported in a study published in the journal Nature Eco­logy & Evol­u­tion that seagrasses release colossal amounts of sugar into their soils, which is also known as the rhizosphere. Under the seagrass, sugar concentrations were unexpectedly at least 80 times higher than previously measured in marine environments.  READ MORE...

The Structure of a Janus Kinase

When a cytokine (green) binds to receptors (teal), two parts of the Janus kinase protein (pink) come together, activating it to send signals inside a cell. In some cancers, mutations in the kinase lock it together, keeping it abnormally active. Credit: Eric Smith/Chris Garcia/Howard Hughes Medical Institute

The breakthrough came on molecular biologist Christopher Garcia’s birthday.

For more than 20 years, his team and others around the world had been chasing an elusive quarry – the 3D structure of a crucial signaling protein in cells. In late 2021, his electron microscope images of the molecule started to come into focus. On December 8, postdoc Naotaka Tsutsumi and graduate student Caleb Glassman sent him an email with a startlingly clear picture of the protein latched on to a key receptor. “I was sitting in a meeting, and I realized we had it,” recalls Garcia, a Howard Hughes Medical Institute Investigator at Stanford University. “I immediately left the meeting and ran back to the lab.”

Glassman, who had just moved to Boston for a Harvard postdoc, canceled his planned backcountry trip, and rushed back to Stanford. “I wanted to finish what Naotaka and I had started,” he explains. Then the three researchers worked around the clock to nail the complete structure of the protein, known as a Janus kinase, and beat competing labs to the discovery. “It was a big horse race between many great groups worldwide, and we were sprinting towards the finish line,” Garcia says. On December 26, they rushed a manuscript to the journal Science, which published the work on March 10, 2022.


Garcia’s team has nabbed not just the full structure of a vitally important signaling molecule, but also the mechanism for how these kinases work, which had been “a fundamental question in biology,” says John O’Shea, an immunologist at the National Institutes of Health who helped to develop one of the first drugs to block Janus kinase function and was not involved with the new research. Because the proteins can go awry in disease, the results could lead to new and better drugs against certain cancers. “It’s amazing work,” O’Shea says.
Chipping away

Janus kinases are one of the communication whizzes of the animal kingdom. They take signals that come from outside cells and pass the info along to molecules inside. Scientists have known for years that malfunctioning Janus kinases can cause disease. Some mutations that impair Janus kinases can severely curtail the body’s ability to fight off infection, causing a condition virtually identical to “bubble boy disease.” And when genetic glitches and exaggerated signals rev up the kinases too much, the result can be blood cancers like leukemia, and allergic or autoimmune diseases.  TO READ MORE, CLICK HERE...

Sixth Mass Extinction Underway

Bruno Kelly REUTERS


It is no secret that extinctions have been happening at an alarming rate in recent decades with human involvement and climate change blamed for creating habitats unsuitable for many species of wildlife.

Even more worrying is the findings of a major study by the International Union for Conservation of Nature (IUCN) Red List of Threatened Species and BirdLife International which found that the earth may be on the brink of a mass extinction event.

Worldwide it is thought that more than 500 species of land animal are close to extinction and could be lost within the next 20 years. The report was published in the scientific journal Proceedings of the National Academy of Sciences, and studied 29,000 species of land vertebrate. They estimated that the number of extinctions expected in the next two decades would likely take thousands of years if not for the negative impact of humanity.

What is a mass extinction?
Scientists estimate that 99% of all living organisms that have ever lived on earth are now extinct. The planet’s natural ecosystem is constantly evolving and as the environment changes certain older species will begin to fade away.

However there are some points in the earth’s history when the gradual evolution has become more of a sudden revolution and a majority of the planet’s living species are wiped out in a relatively short space of time. In the last 500 million years, there have been five occasions when 75-90% of all species have gone extinct, in what is called a mass extinction.

It should be remembered that the ‘short period of time’ is described in geological terms, dating back across the vast period of time since the start of life on earth. With this in mind, Earth.org explains that a mass extinction event can take anything up to 2.8 million years.  READ MORE...

Mangroves Trapped in Time

It has been hiding away for around 125,000 years.

Scientists have uncovered the origin of a mysterious landlocked mangrove forest in the heart of Mexico's Yucatán Peninsula.

Normally, trees of this species — known as red mangroves, or Rhizophora mangle — grow only in salt water, along tropical coastlines. But this forest is located near the San Pedro River in the state of Tabasco, more than 125 miles (200 kilometers) from the nearest ocean. Somehow, these mangroves have adapted to live exclusively in this freshwater environment in southeast Mexico.

Exactly how this ecological enigma came about has baffled scientists. But now, an international, multidisciplinary team of researchers has revealed that this out-of-place ecosystem began growing around 125,000 years ago, when sea levels were much higher and the ocean covered most of the region.

"The most amazing part of this study is that we were able to examine a mangrove ecosystem that has been trapped in time for more than 100,000 years," lead author Octavio Aburto-Oropeza, a marine ecologist at the Scripps Institution of Oceanography at the University of California, San Diego, said in a statement. It was like putting together a "lost world," he added.

TO FIND OUT HOW IT GOT HERE, CLICK HERE...

Colder Winters

A new study shows that increases in extreme winter weather in parts of the US are linked to accelerated warming of the Arctic.  The scientists found that heating in the region ultimately disturbed the circular pattern of winds known as the polar vortex.


This allowed colder winter weather to flow down to the US, notably in the Texas cold wave in February.  The authors say that warming will see more cold winters in some locations.  Over the past four decades, satellite records have shown how increasing global temperatures have had a profound effect on the Arctic.



Warming in the region is far more pronounced than in the rest of the world, and has caused a rapid shrinkage of summer sea ice.  Scientists have long been concerned about the implications of this amplification of global change for the rest of the planet.

This new study indicates that the warming in the Arctic is having a significant impact on winter weather in both North America and East Asia.   The researchers detail a complex meteorological chain that connects this warmer region to a rotating pattern of cold air known as the polar vortex.

The authors show that the melting of ice in the Barents and Kara seas leads to increased snowfall over Siberia and a transfer of excess energy that impacts the swirling winds in the stratosphere above the North Pole.

The heat ultimately causes a stretching of the vortex which then enables extremely cold weather to flow down to the US.  There has been an increase in these stretching events since satellite observations began in 1979.  The scientists believe this vortex stretching process led to the deadly Texas cold wave in February this year.  READ MORE