Questions tagged [natural-conditions]

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What's the largest known range of natural temperature variations of human inhabited Earth across history?

I was reading about the ice age when temperature dropped 11 celsius degrees in relation with our current temperature. Then I found another article which says the temperature fluctuated 15 degree ...
4
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1answer
72 views

Are there natural-forcings climate projections over the 21st century?

CMIP5 offers natural-forcings-only simulations over 1850-2005, which allows comparison with the historical simulations, which allows us to show how anthropogenic forcings have affected the climate ...
4
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2answers
2k views

At what depth does the underground begin to warm up?

Spring water comes out colder from being underground. But if you get deeper the temperature goes up. At what depth does the underground stop getting colder and begins getting warmer? Is there a map ...
29
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2answers
7k views

Where on Earth is the magnetic field intensity stronger?

Are there places on Earth that have a strong magnetic field other than the magnetic north and south poles? Can living where (rare) earth magnetic ore is abundant provide a mini-magnetoshere?
3
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2answers
960 views

Radon is a naturally occurring radioactive gas. How does this work?

Radioactive rocks can release a gas called radon when they decay, which can build up in the basements of buildings with serious effects on people's health. Does anybody have information on how radon ...
3
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0answers
48 views

How can I analyze how environmental conditions are related among different sites?

I want to analyze how the environmental conditions along the migratory route of a bird are related to the environmental conditions found at the breeding ground (which it is at high latitudes and we ...
5
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1answer
869 views

Rate of climate change with and without humans?

I was watching this interview of Bill Nye on Fox News. Bill claimed that the earth's climate is never in equilibrium, but human activity has caused the gradient to be much higher than it would've been ...
8
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1answer
2k views

For how long has the Earth been habitable for humans?

Let's imagine that a human (male or female) could be sent to the past, anytime after the birth of our planet. What would be their survival probability over time? If this question is too hard to ...