Nature photographer Kris Luckenback captured the beautiful and serene moment a mother carried two of her cubs back to shore ...

Interest in lipid interactions with proteins and other biomolecules is emerging not only in fundamental biochemistry but also in the field of nanobiotechnology where lipids are commonly used, for ...

Two polar bear cubs walk in the snowy buggy tracks, look at the camera and then out of frame. Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and ...