Paleontology

Fossil of Giant Squid-Like Creature from Cretaceous Period Bears Marks of Deadly Attack

Reconstruction of a mosasaur and large fish preying on an injured Enchoteuthis, representing potential candidates for the bite marks on the octopod. Image credit: Kaitlin Lindblad.

Paleontologists studying a fossil unearthed in southern Manitoba, Canada, have identified what they believe are two bite marks on the internal skeleton of the ancient giant cephalopod Enchoteuthis, offering rare evidence of predator-prey interactions in the Cretaceous seas that once covered the middle of North America. Reconstruction of a mosasaur and large fish preying on an injured Enchoteuthis,...

Biology

Camera Traps Reveal Congo Basin’s Hidden Wildlife

The serval (Leptailurus serval), a medium-sized wild cat native to Africa. Image credit: Florida Atlantic University.

A new camera technique in Congo’s Lomami National Park reveals how monkeys, pangolins and civets divide up life between the ground, the understory and the canopy. The serval (Leptailurus serval), a medium-sized wild cat native to Africa. Image credit: Florida Atlantic University. Lomami National Park is located in the Tshopo and Maniema provinces in the Democratic Republic of the Congo. Established...

Medicine

Keto Diet Outperforms Others for Cardiometabolic Health during Weight Loss: Study

Diet macronutrient content affects the cardiometabolic benefits of weight loss. Image credit: Petersen et al., doi: 10.1016/j.cmet.2026.07.020.

Not all diets are created equal when it comes to reversing the metabolic damage of obesity, even when they produce the same amount of weight loss, according to a new randomized clinical trial published in the journal Cell Metabolism. Diet macronutrient content affects the cardiometabolic benefits of weight loss. Image credit: Petersen et al., doi: 10.1016/j.cmet.2026.07.020. “Obesity causes a constellation...

Geology

Australia’s North Pole Dome Crater is Earth’s Oldest and Only Known Archean Impact Structure

The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center; (B) geological map of the NPD and the shatter-cone field (yellow star); (C) A quartz (Qtz)-carbonate vein cutting shatter-cone lineation. Image credit: Kirkland et al., doi: 10.1130/G54866.1.

Zircon crystals and impact-altered minerals show that a massive asteroid slammed into what is now the Pilbara region of Western Australia about 3 billion years ago. The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center;...