Reliance Jio recently unveiled voice-only plans for prepaid subscribers in India. Shortly after, the company revised the plans with lower prices and validity adjustments. Now, the telecom operator has reintroduced an affordable prepaid plan at Rs. 189 after briefly discontinuing it. This plan is listed as a value offering which provides free call and SMS services alongside bundled data packs.

There is a great need in healthcare, nanotechnology and other areas to improve our ability to see tiny objects that elude even the most powerful optical systems.