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

Year:

Only show posts with narrations

Is there an evolutionary advantage to Dolphins and Whales breathing air as opposed to developing gills and being able to remain underwater indefinitely?

5246 upvotes

Mark as read: Add to a list

On a physical level, is there a difference between PTSD and extreme anxiety that does not stem from a traumatic event?

34 upvotes

Mark as read: Add to a list

Why can the force of a male ejaculation differ so greatly between ejaculations and what determines this?

1 upvotes

Mark as read: Add to a list

Could an Astronaut doing a spacewalk on the ISS propel themselves toward Earth to the point where gravity would begin to pull them to the ground?

1 upvotes

Mark as read: Add to a list

Is there any measurable difference in the effectiveness of generic brand medication and name brand medical? Assuming the same active ingredients and dosage.

1 upvotes

Mark as read: Add to a list

Is it possible to be close enough to a black hole to ungergo significant time dilation relative to Earth and not get physically destroyed by the intense gravity?

1 upvotes

Mark as read: Add to a list

If a group of people wanted to live in permnant isolation from the world, what's the minimum number of people required to procreate with enough lasting genetic diversity to survive?

1 upvotes

Mark as read: Add to a list

If you did a brain scan on someone who was sleeping, would the brain activity be different if they were having a lucid dream verses a regular dream?

1 upvotes

Mark as read: Add to a list

Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is there an evolutionary advantage to Dolphins and Whales breathing air as opposed to developing gills and being able to remain underwater indefinitely?	5246
On a physical level, is there a difference between PTSD and extreme anxiety that does not stem from a traumatic event?	34
Why can the force of a male ejaculation differ so greatly between ejaculations and what determines this?	1
Could an Astronaut doing a spacewalk on the ISS propel themselves toward Earth to the point where gravity would begin to pull them to the ground?	1
Is there any measurable difference in the effectiveness of generic brand medication and name brand medical? Assuming the same active ingredients and dosage.	1
Is it possible to be close enough to a black hole to ungergo significant time dilation relative to Earth and not get physically destroyed by the intense gravity?	1
If a group of people wanted to live in permnant isolation from the world, what's the minimum number of people required to procreate with enough lasting genetic diversity to survive?	1
If you did a brain scan on someone who was sleeping, would the brain activity be different if they were having a lucid dream verses a regular dream?	1