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Frank Bennett

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The intensity of light coming from the stars, of course, does not depend on the season, but visual perception is influenced by the celestial background. In summer time the Sun drops below the horizon in St. Petersburg only by 6 degrees, in Moscow – by 11 degrees. This means that pitch blackness does not come and twilight lasts the whole night.
Against such a background the luminaries look dimmer, and on winter nights the skies take on a darker colour. In addition, the number of bright stars actually increases during the winter period. For example, in summer, only 6 of the 25 brightest stars can be seen at 00:00, while in winter you can see 10, including the legendary Sirius.
In addition to illumination, the visibility of luminaries is influenced by the transparency of the air. Cold air contains less moisture than warm air. Because of this, the air is more transparent in winter.

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American researchers have identified how caterpillars prevent tomatoes from calling for help. As it turned out, caterpillars of the genus Helicoverpa feed on tomatoes and their leaves and leave enzyme-rich saliva on them, preventing the fruit from calling for help.

When damaged or attacked by parasites, plants release chemical distress signals. Other flora can react to these signals to protect themselves. Sometimes such signals attract other insects. Tomatoes, for example, use their secretions to lure wasps that feed on caterpillars and lay eggs in them (which also guarantees the caterpillars’ death).

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Blue holes are huge caves on the seabed left during the Ice Ages, with walls composed mainly of water-soluble porous limestone. They were formed during periods of cooling when sea levels dropped significantly. The researchers used a set of probes attached to a circular metal frame. The device was lowered into the water via a cable and transmitted real-time data on depth, temperature and other water characteristics.

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The country’s Ministry of Environment has announced its intention to ban all clothing, footwear and waterproofing materials containing perfluoroalkyl and polyfluoroalkyl substances, citing numerous health risks.
Originating in the 1930s, PFASs became widespread in the 1950s. They are used in a variety of products, from cars and carpets to packaging and care products.
Studies have shown links between PFASs and reproductive health problems, developmental delays in children, cancer and high cholesterol.

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The species was discovered in one of the hard-to-reach karst caves. Scientists note that the reptile has perfectly adapted to the difficult conditions. It was named “Kukri cave snake”, and scientifically Oligodon speleoserpens.
Members of the research team noticed the unusual creature when it tried to climb to a height of about 15 metres on the rock.

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Thailand’s coastal zone has long been one of the favourite destinations for divers due to the beauty of underwater scenery, but now the holidays of lovers of this hobby are under threat.
Snorkelling and diving have been temporarily banned in popular Phuket resorts, as these human pastimes have recently been significantly damaging coral reefs. The measures were announced by Hat Nopharat Tara Moo Koh Phi Phi Phi National Park, with the ban taking effect from 16 May.
Studies have revealed serious coral bleaching as well as a reduction in the diversity of marine animals and plants.

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Despite the fact that the Acropolis of Athens is the most popular attraction in Greece, scientists continue to discover more and more information about its history. In particular, according to a publication by scientists, graffiti that was discovered near Athens may depict an ancient temple inside a citadel that predates the Parthenon.
The small graffiti, which consists of a striking engraving of the building, was found on marble rock on Barako Hill near Vary, about 19 kilometres southeast of Athens in the Greek region of Attica.

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As noted by the portal, the bridge named after the legendary Canadian hockey player of the Detroit Red Wings will be the 10th longest in the world when completed. In addition, it will also have the longest composite iron and concrete deck of any cable-stayed bridge in the world.

In addition to its name, it is also related to hockey in terms of its shape. New Atlas pointed out that the designers projected it in such a way that the bridge resembles the curve of a hockey stick while snapping the puck.

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Carmona was once a fairly large settlement in the province of Betica. The local necropolis has been explored for over a century, discovering more and more burials, including mausoleums. One of them was found five years ago, it also contained niches with burial urns. Also archaeologists papala pala a ring of gold and a vessel with a liquid substance of red colour.
It is curious that once the wine was white, but chemical processes in the course of 2.5 millennia gave it a red hue.

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The famous businessman and head of SpaceX Ilon Musk shared his opinion in social network, as if in the future people will be able to use brain implants instead of smartphones.

The site Not Elon Musk published a survey on the topic: “Do you want to use the Neuralink interface to control a gadget with the power of thoughts?”.

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