Mumbai: For weeks, a shortage of cartridges for rapid tuberculosis tests has hampered the city's ability to diagnose drug-resistant strains of the disease. This has forced frontline medical workers to ...

Everything on Earth is made of atoms, most of which are closely packed together in the form of minerals. Life has its uses for minerals—ask a coral reef—but its essence lies in atoms arranged as ...

Across all domains of life, immune defenses foil invading viruses by making it impossible for the viruses to replicate. Most ...