Sentences with phrase «researchers puzzled over»

One mystery that the researchers puzzled over was why the seismicity only appeared to be associated with one saltwater disposal well, as there are more than 200 such wells active in the Barnett Shale production region.

The supermassive black hole formed during the earliest moments of the universe, which has researchers puzzled over how it got to be so big.

Researchers puzzled over what sparked the fires, but a new study offers a possible explanation.

Researchers puzzle over precisely how teleost fishes, such as this spotted sailfin sucker catfish, evolved a dazzling array of forms.

Not exact matches

The tail markings reveal that it is the same humpback whale, which puzzles researchers because the over -6,000-mile trek is two times the typical seasonal journey of a whale, not to mention that it's a female; males whales are the ones who normally travel long distances.

Researchers believe that the latest results showing that dogs» quality of semen has diminished may offer a new piece of the puzzle over the reported significant decline in human semen quality.

As «man's best friend» and closest companion animal, the researchers believe that the latest results may offer a new piece of the puzzle over the reported significant decline in human semen quality — a controversial subject which scientists continue to debate.

These are some of the questions researchers have puzzled over for decades in trying to piece together the origins of life on Earth.

Researchers have always puzzled over why the mother allows an embryo, which is basically a parasite, to settle in and grow.

And after decades of puzzling over what causes narcolepsy's fits of daytime sleep and muscle paralysis, researchers suspect it's a response to an autoimmune disease.

But researchers are still puzzling over where and how the brain combines these two very different types of sensory information.

Researchers have long puzzled over the shorter life span of larger male ungulates, or hoofed mammals.

However, researchers have long been puzzled by the fact that, over the long term, the steady fall of marine snow can not account for all the food consumed by animals and microbes living in the sediment.

Because the human and chimpanzee lineages split between 5 million and 7 million years ago, and humans are the only apes that engage in cooperative breeding, researchers have puzzled over how this helping behavior might have evolved all over again on the human line.

Lacking written records of his people, researchers have long puzzled over how the complex 1000 - year - old Chacoan society was organized.

For years, researchers have puzzled over conflicting results about the workings of a type of immune system found in many species of bacteria.

Researchers videotaped the squirrels» foraging trials and found that once the critters got over their frustration, they tried new tactics, such as biting the box, flipping it, dragging, and generally spending time puzzling over how to open the box.

Puzzled over health complications more persistent among African Americans than in other Americans, researchers invoke epigenetics.

LONDON, 22 August, 2014 − For years, researchers have puzzled over the temperature rises that haven't happened — but scientists in China and the US believe they have cracked the mystery of the missing heat.