/u/combuchan's posts in /r/askscience

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Can ultrasound devices be scaled up to make a real life bioscanner?

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Is there any research being done/is it innately possible to vastly accelerate the growth of existing plant species through genetics?

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If the Pillars of Creation are made of gas and dust, how has their appearance not physically changed in the 20 years between their pictures were taken?

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If the Pillars of Creation are made of gas and dust, how has their appearance not changed in the 20 years between their pictures were taken?

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Is it just a coincidence that a disproportional number of the oldest people in the world are black women?

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A small amount of a mysterious white powder is sent to an official's office by mail and spills on their desk when opened. How is the substance identified?

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Cats and dogs both seem to rapidly shake their bodies or heads in response to adverse stimuli and then quickly get over it. I can barely move my head half that fast and if I do I get a slight headache and feel dizzy. What is going on here?

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Electric BART commuter trains in the San Francisco Bay Area are the longest in the US at up to 710 feet in length and a theoretical 2,000 person crush load. What kind of fossil fuel engine 'bus' could possibly provide the same level of service?

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Can we have a frank discussion about food safety, eg, the dangers of leaving something like cooked meat out overnight?

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Is it just a coincidence that you can define a loop around the periodic table?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Can ultrasound devices be scaled up to make a real life bioscanner?	1
Is there any research being done/is it innately possible to vastly accelerate the growth of existing plant species through genetics?	1
If the Pillars of Creation are made of gas and dust, how has their appearance not physically changed in the 20 years between their pictures were taken?	1
If the Pillars of Creation are made of gas and dust, how has their appearance not changed in the 20 years between their pictures were taken?	1
Is it just a coincidence that a disproportional number of the oldest people in the world are black women?	1
A small amount of a mysterious white powder is sent to an official's office by mail and spills on their desk when opened. How is the substance identified?	1
Cats and dogs both seem to rapidly shake their bodies or heads in response to adverse stimuli and then quickly get over it. I can barely move my head half that fast and if I do I get a slight headache and feel dizzy. What is going on here?	1
Electric BART commuter trains in the San Francisco Bay Area are the longest in the US at up to 710 feet in length and a theoretical 2,000 person crush load. What kind of fossil fuel engine 'bus' could possibly provide the same level of service?	1
Can we have a frank discussion about food safety, eg, the dangers of leaving something like cooked meat out overnight?	1
Is it just a coincidence that you can define a loop around the periodic table?	1