Juno Maps Water Ice Across Northern Ganymede

Jupiter’s moon Ganymede is the largest planetary satellite in the solar system. It’s also one of the most intriguing: Ganymede is the only moon with its own magnetic field, it is the most differentiated of all moons, and it likely possesses a subsurface ocean of liquid water. It was studied by the early […]

66 Roman Army camps in northern Spain shed light on infamous conquest

A vast network of dozens of Roman Army camps have been discovered in a mountainous region of northern Spain.  The camps show just how big the Roman military was around 2,000 years ago during the conquest of the Iberian Peninsula.  “They reveal the intense Roman activity at the entrance to the Cantabrian Mountains during the […]

How to watch the northern lights across far northern US tonight

A small northern slice of the United States could get a rare glimpse of the northern lights on Thursday (Dec. 10) night.  A geomagnetic storm may cause the lights, or aurora borealis, to dip more southward than usual, according to Space Weather Watch. Earlier this week, there was hope that the northern lights might dip […]

Leaf microbiomes are a neighborhood affair in northern forests — ScienceDaily

Forest leaves are teeming with bacterial life — but despite the vast extent of bacteria-covered foliage across the world, this habitat, known as the phyllosphere, remains full of mysteries. How do bacteria spread from tree to tree? Do certain types of bacteria only live on certain types of trees? A new paper published in the […]

A Census of Snowdrifts in Northern Alaska

Snowdrifts are iconic features of frigid high-latitude landscapes. They are also important natural phenomena that dictate how fresh water flows through those landscapes once snows melt in the warmer months. Despite their importance, however, snowdrifts remain understudied. In a new study, Parr et al. used a combination of lidar and structure-from-motion photogrammetry to […]

Why ancient South American mammals may have lost out to northern kin

Millions of years ago, North American mammals flooded South America after the two continents joined. But South American mammals failed to return the favor, and now scientists have an idea why. A new analysis of fossils suggests that many native South American mammal groups were declining early in the continental coupling, leaving fewer species available […]

Surprised researchers: Number of leopards in northern China on the rise

Leopards are fascinating animals. In addition to being sublime hunters that will eat nearly anything and can survive in varied habitats from forests to deserts, they are able to withstand temperatures ranging from minus 40 degrees Celsius during winter to plus 40 degrees in summer. Despite their resilience, the majority of leopard species are endangered. […]

Only two northern white rhinos remain. And they’re both female.

There were fewer than 100 southern white rhinoceroses (Ceratotherium simum simum) a century ago. Today, there are over 20,000. Sadly, this success story only stretches as far as the southern subspecies of the white rhino. With the death of the last male in 2018, the northern white rhinoceros (Ceratotherium simum cottoni) has passed the point […]