Could humans become extinct

Answer 1

There is at least one instance were you can directly account for many extinction by one cause, MAN. As a species we are very adapt at killing everything that we do not value or care enough about. We kill many species a year and also have driven many more to the brink of extinction. Some of which are beyond saving, they are dead animals walking as it were.

There is possibly another example where 1 event possibly lead to a chain reaction which cause the worst extinction event in Earths history, the Permian-Triassic extinction or "The Great Dying".

The theory although controversial explains exactly all the evidence we can see today.

About 251 million years ago it is believed an asteroid about the same size of the Chicxulub Asteroid struck earth just of the coast of Australia. It has been suggested that the shock waves from this asteroid concentrated on the opposite side of the planet at the antipodal point causing a huge volcanic eruption in Siberia, the so called Siberian Traps. Gases from this volcanic eruption caused a large greenhouse effect and warmed the planet.

This increase in temperature in turn stopped the ocean conveyor (a set of currents that circumnavigate the oceans spreading warmth from the equator to the poles and also bringing oxygen to the deep ocean). Once the ocean conveyor had stopped the deep oceans suffered anoxia. This allowed anaerobic bacteria to flourish. One by product of these bacteria is an extremely poisonous gas called Hydrogen Sulphide. This gas was formed in such quantities that it bubbled out of the ocean and killed anything it came in contact with. An example of this anoxic state and hydrogen sulphide making bacteria can be found in Green Lake in New York State.

Answer 2

Most prevalent IMMEDIATE cause of extinction - catastrophies (see catastrophism)

Environmental changes are also a huge factor in extinction, though I wouldn't call them immediate causes for extinction.

Answer 3

Any species can become extinct, given the right conditions; most species do, eventually, die out, but that process can take many millennia.

Answer 4

Black holes, gamma rays, megaquakes, tsunamiis, supervolcanoes, nuclear warfare, artifical intellegence, asteroid strike, diseases but most likely global climate change

Answer 5

Asteroid/Meteor impact, SuperVolcanic Eruptions, Diseases, Wars, Global Warming, Gamma Ray-Burst, Population Decline and Climate Change

Answer 6

DEATH !!