laser pulses produce the highly concentrated beam of light that are absorbed by hair follicles and damage the follicle. the procedure can be uncomfortable, but it is not usually painful.

How would the previous sentence be correctly capitalized?
Answer: Laser pulses produce the highly concentrated beam of light that are absorbed by hair follicles and damage the follicle. The procedure can be uncomfortable, but it is not usually painful.
in the summer they live in tents, open to every breeze and cool. they are healthy, and strong, and happy.

How would the previous sentence be correctly capitalized?
Answer: In the summer they live in tents, open to every breeze and cool. They are healthy, and strong, and happy.
– i worked for a month and most of the time was spent pulling icebergs away from the drilling rig, tells mark johnson.

How would the previous sentence be correctly capitalized?
Answer: – I worked for a month and most of the time was spent pulling icebergs away from the drilling rig, tells Mark Johnson.
however, he kept it from his parents for long enough that by the time it was treated it was impossible to save him from a permanent disability.

How would the previous sentence be correctly capitalized?
Answer: However, he kept it from his parents for long enough that by the time it was treated it was impossible to save him from a permanent disability.