When hunting, ranching, or other human activities create those invisible barriers, they present challenges for the migration or natural reintroduction of species.

A NEW MAPPING METHOD COULD HELP HUMANS AND WILDLIFE COEXISTPHILIP KIEFERFEBRUARY 4, 2021POPULAR-SCIENCE

That’s just one example of the daily battles that rescue teams such as Jabbar’s wage as they try to protect one of the world’s rarest dolphin species, the Indus river dolphin.

THE UNLIKELY DOLPHIN RESCUE HOT SPOT: PAKISTANCHARU KASTURIFEBRUARY 2, 2021OZY

In half a dozen years of searching, he’s seen only one fossil of this species.

THIS ANCIENT SEA REPTILE HAD A SLICING BITE LIKE NO OTHERJAKE BUEHLERFEBRUARY 2, 2021SCIENCE NEWS

Those bacteria and yeast thrive in a variety of temperature zones depending on the species, but generally speaking, doughs are happy somewhere in the mid-70s.

HOW TO HELP YOUR DOUGH RISE TO THE OCCASION IN WINTERBECKY KRYSTALFEBRUARY 1, 2021WASHINGTON POST

In other instances, though, they are accidentally snared along with commercially valuable species like tuna and swordfish.

SHARKS AND RAYS ARE FAR LESS ABUNDANT IN THE WORLD’S OCEANS THAN 50 YEARS AGOKATE BAGGALEYJANUARY 27, 2021POPULAR-SCIENCE

Although specific biological setups differ between species, the general concept is pretty similar.

SCIENTISTS MADE A BIOHYBRID NOSE USING CELLS FROM MOSQUITOESSHELLY FANJANUARY 26, 2021SINGULARITY HUB

A type of knifefish, they belong to the species Electrophorus voltai.

SOME ELECTRIC EELS COORDINATE THEIR ATTACKS TO ZAP PREYJONATHAN LAMBERTJANUARY 25, 2021SCIENCE NEWS FOR STUDENTS

SYNONYM OF THE DAY

OCTOBER 26, 1985

Choose the synonym for future

capacitor

lightning