The Great Oxidation Event (GOE), sometimes also called the Great Oxygenation Event, Oxygen Catastrophe, Oxygen Crisis, Oxygen Holocaust, or Oxygen Revolution, was a time period when the Earth’s atmosphere and the shallow ocean first experienced a rise in oxygen, approximately 2.4–2.0 Ga (billion years ago) during the …

What happened to the carbon that poisoned the atmosphere? Microorganisms grew their shells from the carbon dissolved in the ocean, and their shells are part of the Earth’s crust today.

The major threat from increased CO2 is the greenhouse effect. As a greenhouse gas, excessive CO2 creates a cover that traps the sun’s heat energy in the atmospheric bubble, warming the planet and the oceans. An increase in CO2 plays havoc with the Earth’s climates by causing changes in weather patterns.

Summary: Poisonous phosgene gas used as a chemical weapon in the trenches in the First World War, but nearly a century later, new research by an international team of scientists has discovered that phosgene is present in significant quantities in the atmosphere.

Three and a half billion years ago, Earth’s atmosphere contained almost no free oxygen. Instead, it consisted mainly of carbon dioxide, perhaps as much as 100 times more carbon dioxide than contained in today’s atmosphere.

Oxygen in the form of the oxygen molecule (O2), produced by plants and vital for animals, is abundant in Earth’s atmosphere and oceans. But at some point, Earth underwent what scientists call the Great Oxidation Event or GOE for short, as ocean microbes evolved to produce O2 via photosynthesis.

Much of the CO2 dissolved into the oceans. Eventually, a simple form of bacteria developed that could live on energy from the Sun and carbon dioxide in the water, producing oxygen as a waste product. Thus, oxygen began to build up in the atmosphere, while the carbon dioxide levels continued to drop.

17 September United States – Chualar bus crash. In the worst road crash in U.S. history, a train hit a flatbed truck used as a bus at a rail crossing in Chualar, California, killing 32 people and injuring 25.

Emma Martina Luigia Morano OMRI (29 November 1899 – 15 April 2017) was an Italian supercentenarian who, before her death at the age of 117 years and 137 days, was the world’s oldest living person whose age had been verified, and the last living person to have been verified as being born in the 1800s.

Consciousness after death is a common theme in society and culture in the context of life after death. Scientific research has established that the mind and consciousness are closely connected with the physiological functioning of the brain, the cessation of which defines brain death.

Hearing is widely thought to be the last sense to go in the dying process. Now UBC researchers have evidence that some people may still be able to hear while in an unresponsive state at the end of their life.