Many insects rely on heritable bacterial endosymbionts for essential nutrients that they cannot get through their diet. A new study, published in Nature Communications, indicates that the genomes of ...

Gram-positive bacteria show blue or purple after Gram-staining in a laboratory test. They have thick cell walls. Gram-negative bacteria show pink or red on staining and have thin walls. They release ...

A team of Romanian scientists drilled a 25-metre ice core from the Scǎrișoara Cave in search of clues for developing new medicines. The 5,000-year-old ...