poison gas

Two thousand years ago, the ancient tourists went to a Greek-Roman temple in Hierapolis (modern-day Turkey), located above a cave that was supposed to be the gate to the afterlife.

Some weapons are so dangerous that many areas become dead lands and are prohibited from use in later wars.

In 1986, a mysterious fog suddenly covered a residential area near Lake Nyos in Cameroon, which claimed a life ...

Today, the blue two-tailed comet sprayed poisonous gas called Lulin to the closest position to the earth, with a distance of about 60 million kilometers or 160 times from the earth

With the destruction of about 800 million tons of TNT, the Tambora volcano erupted on April 10, 1815 in Sumbawa, Indonesia was the biggest shocking explosion in human history.

A mysterious crack has appeared in China that people fear and call it

Unlike other volcanic lakes, underneath Lake Nyos there is a great amount of ghosts. Once a shock occurs, CO2 gas will leak into the water, forming carbonic acid. It can be said

25 years ago a cloud of carbon dioxide (CO2) spread from Lake Nyos in Cameroon suddenly struck villages around the lake, killing more than 1,700 people. Until today, scientists

The Nigerian government is urgently building dams to prevent the possibility of a dangerous lake on Cameroon's crater breaking and releasing toxic gas.

When a volcano in Iceland operated in 1783, many people in Britain died of poison gas, the European crop failed to spread the famine.