Mike
Carruthers:
Why is it that when you see geese flying in a group, they're always
in a "V" formation?
Hampton Sides:
Most likely what's happening is they've found a way to fly that
enables every single goose to see every single other goose.
Hampton Sides
is editor of the book Why
Moths Hate Thomas Edison...
It's the same
reason why many Air Force squadrons fly in a "V" formation;
it's one pattern that allows everyone to keep a bead on everyone
else.
Ever wonder why
fireflies light up?
It's almost strictly
the males that are doing it to appeal to their own species of
female fireflies. The female is usually hidden in the grass
or underneath a tree limb of something and she flashes back
a very seductive come-hither signal and commences to do what
fireflies need to do very quickly because they only live for
seven days.
And why are rivers
and lakes freshwater and oceans saltwater?
As rivers start
in high altitudes and work their way down to the point where
they finally run into the ocean, they're picking up salt all
along the way. Finally they dump into the ocean, the water evaporates
but the salts stays there in the ocean. Lakes, most lakes, they're
always draining and that water, fresh water, keeps coming in
both from rain and from higher streams and underground springs.
So as long as a lake drains it'll stay fresh.
At somethingyoushouldknow.net
I'm Mike Carruthers and that's Something You Should Know.
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