For a long time, scientists thought that the sharks must hibernate in deep waters to conserve energy at a time when there was little plankton around.
For a long time, scientists believed, the bears did not get much farther than what is known as east Beringia, present-day Alaska and the Yukon.
One mechanism for the formation of ATP operates so rapidly that for a long time scientists were unable to detect any change in the amount of ATP in the muscle as a result of contraction.
Since many processes in forest ecology take a long time, scientists studying changes in plant communities often turn to the use of chronosequences, or sets of sites that share similar attributes but are of different ages.
And this is when many a researcher would love to get their hands on Leonardo da Vinci's most famous muse, in order to find out more about how she was painted.For a long time, scientists and curators have wondered how da Vinci created shadows on her face with seemingly no brushstrokes or contours.
For a long time scientists have considered that unstudiable".
For a long time, scientists have known that some fish species appear warm-blooded.
But for a long time, scientists assumed this kind of active ventilation happened only in large or particularly active bugs.
But for a long time, scientists couldn't agree on why the animals also known as water bears are so hardy.
And for a long time, scientists thought only creatures with nerves and noggins truly had access to these special skills.
For a long time, scientists thought that intelligence was innate, according to David Shenk, author of "The Genius Is In All of Us".
