Naked mole – rat – Heterocephalus glaber

Naked mole-rat - Heterocephalus glaber - EatingNaked mole-rat - Heterocephalus glaberHeterocephalus glaber - Louisville-ZooHeterocephalus glaber - Museum of Natural History - Genova, Italy

Naked mole-rat – Heterocephalus glaber

Naked mole-rat – Heterocephalus glaber – Is practically blind and has no pain. This rodent lives in East Africa. It is digging underground corridors in search of tubers and roots. For this he uses the incisors that are in front of the lips, so that the soil does not get into the mouth.
Mole-rats spend almost their entire lives underground without going to the surface. They are unusual for many reasons. Not only are they the only cold-blooded mammals, they are also resistant to cancer, aging, hypoxia and pain.
Their almost completely hairless, thick and wrinkled skin. It is insensitive to abrasions or scratches. Because Mole-rats do not have the key neurotransmitter for pain conduction (substance P).

Naked mole-rats are the longest-living rodents (they live to 30 years)

And their risk of death doesn’t increase with age. These animals have very active mechanisms repair DNA.
They also tolerate extreme hypoxia, which often occurs in narrow and stuffy underground tunnels. When there is a lack of air, mole-rats reduce life activity. They change the energy supply process (break down fructose instead of glucose). In this way they avoid brain damage.
The equally interesting is structure Social. Which resembles swarms of bees or ant colonies. Flocks of these rodents count from several dozen to 300 individuals. At the same time, only the queen and prolific male breeds. The rest are sterile and conscientiously work for the herd.

Nevado del Ruiz – Colombia

Nevado del Ruiz - Almost 2 weeks after its deadly eruption in 1985, Viewed from the northeastEruption of Nevado del RuizSummit after the eruption that caused the Armero tragedy - 11.1985Nevado del Ruiz Volcano, Colombia - NASANevado del Ruiz - 1985Volcanic rocks in the perennial snow - ColombiaRefuge hostel Mountain top with perennial snow - ColombiaView from bamboo plantation

 
 
 

Nevado del Ruiz – Colombia

 

  • Location: Colombia
  • Peak: 5321 m a. s. l.

 
Nevado del Ruiz volcano, already active for around 2,000,000 years, is 130 km west of the capital of Colombia – Bogota. It has many layers of lava hardened alternately with volcanic ash and other pyroclastic rocks. The mountain is part of the volcanic massifs created by five more volcanoes covered with glaciers. Four of them are still active.

The volcano became famous thanks to its catastrophic eruption, which took place on November 13, 1985. As a result, glacier peaks of 25 kmĀ² have melted. The resulting lahars, flowing at a speed of 40 to 60 km / h, flooded the city of Armero and several surrounding villages with a layer of mud deep for 6 meters. Only in the city more than 21,000 citizens died (out of a total of 23,000). Losses reached $ 1 billion. The consequence of this catastrophe was the adoption by Colombia of security measures that should reduce the risk of death for so many people.

In September and October 2010, a gradual increase in seismic activity near the Arenas crater was noticed. Over the next four months, there were earthquakes that increased fear of further devastating eruptions.

Threats to humanity – Existential risk

Threats to humanity - Jaan Tallinn

Threats to humanity – Existential risk

Threats to humanity – In 2013. At the University of Cambridge opened the institute, which is investigating the most serious threats to humanity: artificial intelligence, climate change, nuclear war and biotechnologies. The plant bears a frightening name Centre for the Study of Existential Risk (CSER, “research center existential risk”) and apart from philosophers working in the IT specialists and engineers, for example. Jaan Tallinn, co-founder of Skype.

Smoking threatens deafness

Smoking threatens deafness - Cigarette in ashtray

Smoking threatens deafness

Smoking threatens deafness – British scientists from the University of Manchester conducted hearing tests on a group of 165 thousand. men and women aged 40 to 69 years. Which was a representative sample of the British population. The results largely confirm previous analysis and showed that suffers from hearing loss approx. 30% of smokers. It turned out that between the risk of hearing loss, and smoking, there is a direct relationship.

Caffeine consumption – Turned out risk of suicide

Caffeine consumption - Coffee in cups

Caffeine consumption – Turned out risk of suicide

Caffeine consumption – Turned out risk of suicide – Researchers analyzed data from three American studies. Which for 20 years in 200 thousand. men and women observed in the total consumption of caffeine. Not only coffee, but also in other food products. Such as: tea, chocolate or energy drinks. It turned out that the risk of suicide among adults who drink several cups a day of caffeinated coffee. It was almost twice lower than in those who drank decaffeinated coffee, very little coffee or do not consume this drink.

Cardiovascular disease risk – Higher among bald men

Cardiovascular disease risk - Bald Man's Nape

Cardiovascular disease risk – Higher among bald men

Cardiovascular disease risk – Higher among bald men. Up to about 1/3, compared to the other men. Tests on 37 thousand. men carried Japanese scientists. Hair loss depends on the activity of male hormones, which also accelerate hardening of the blood vessels, or the effects of atherosclerosis.

Solaris – Not only giants try their hand at new areas

Solaris - Solaris Urbino 18 - Second generation, Dresden, Germany, 2004

Solaris – Not only giants try their hand at new areas

Solaris – Not only giants try their hand at new areas for themselves. Polish Solaris, a manufacturer of buses and trolleybuses, took such a risk a few years ago, when decided to build a tram. For a company from Poznan buses are still the core product, but won tenders for trams growing. It started from Poznan, then appeared the German cityJena, Braunschweig, Leipzig. At the end of 2015. Solaris trams will ride through Olsztyn, which exactly half a century restores this kind of communication.

Robert Katzman – American neurologist

Robert Katzman

Robert Katzman – American neurologist

Robert Katzman – A neurologist at the University of Medical Sciences Albert Einstein discovered, that regular dancing reduces the risk of developing dementia in old age by as much as 76 percent! Reason: Dance engages different brain areas such as the center of hearing, movement, emotions and spatial awareness.