Ecology

Comunicazione cetacei

How do dolphins, whales and other cetaceans communicate with each other?

THE cetaceans (placental aquatic mammals that include whales, dolphins, killer whales, porpoises, narwhals and belugas) represent a large group of marine mammals, whose in-depth study has allowed us to understand more about intraspecific communication methods, ways and strategies of action and relationship between individuals over the last 40 years. Some cetaceans have the ability to emit sound wavesthanks to which ...

spiaggia sabbia stellata isola okinawa

What is the “star sand” of Okinawa, Japan made of?

Among the natural wonders of the Okinawa Islandsin the far southwest of Japan, we can find some beaches with a unique feature, which the Japanese call Hoshizuna no Hamaliterally “star shaped sand”. In fact, these beaches are formed by tiny “grains” star-shaped and for several years they have been characterized as a famous tourist destination in some islands of Okinawa ...

marcinelle

Marcinelle disaster, 68 years since the tragic fire in the coal mine in Belgium

They have passed 67 years old from the tragic accident that occurred on Wednesday August 8, 1956 in the Bois du Cazier coal mineto Marcinellein the province of Hainaut, in Belgium southern, where 262 miners they died due to a fire and toxic fumes that spread to over 970 meters deep. Only 13 people managed to save themselves. Among the ...

antizanzare

Which mosquito repellents work best? Types and mechanism of action

With the arrival of summer, mosquitoes become a constant nuisance. But what are the most effective and safe methods to defend yourself from their bites? Let’s see in detail how the methods work mechanics, chemists And physicists and let’s find out what they are principles active approved by the European Chemicals Agency (ECHA) to prevent mosquito bites. Spoiler: Not all ...

taser

What is a taser, how does it work and what happens when you get hit?

The taseracronym for Thomas A. Swift’s Electric Rifle (“Thomas A. Swift’s electric rifle”, from the novel Tom Swift and His Electric Rifle by Victor Appleton) is a weapon intended for law enforcement agencies such as the Carabinieri and Police (or, with some limitations, also for personal defense) and it is a “electric immobilizer” which, once it hits the target, releases ...

Truffa telefonate prefisso Portogallo

How the new scam with Portugal prefix +351 works and how to protect yourself

Recently, many people have reported receiving suspicious calls with the International prefix +351 (00351)apparently coming from the PortugalThis is an attempt to telephone phishinga fraudulent technique that aims to steal sensitive user data with a false job offer: this is why young job seekers are more at risk. These calls often include a recorded message that invites the user to ...

temporali estivi termoconvettivi

What are “heat storms” and how do they form in the summer months?

The African anticyclone is about to bring a storm on Thursday 8th August new heat wave in Italy with peaks of up to 40 °C in the South and 38 °C in the Centre and North, while for today Wednesday 7 August thunderstorms are possible, especially the so-called “heat storms” typical between late spring and early autumn, when the air ...