The minimum temperature at which a substance starts melting and becomes a liquid at atmospheric pressure is known as its melting point.

A three-day joint military exercise between India and Singapore on 8^th April ,2019 named ‘Bold Kurukshetra–2019’ started in Jhansi’s Babina Cantonment, Uttar Pradesh to strengthen cooperation against terrorism, develop defence technology and boost maritime security.

The Sundarbans National Park is a National Park, Tiger Reserve, and a Biosphere Reserve in West Bengal, India. It is part of the Sundarbans on the Ganges Delta, and adjacent to the Sundarbans Reserve Forest in Bangladesh.

The Bharat Ratna is the highest civilian award of the Republic of India. Instituted in 1954, the award is conferred in recognition of exceptional service and performance of the highest order.

Wisden Cricketers' Almanack has named Virat Kohli as the Leading Cricketer of the year for the third successive time. Indian women opener Smriti Mandhana bagged the women's Leading Cricketer of the year award.

President Jovenel Moiseannounced Jean Michel Lapin, who once served as a courier in the public administration, to be the new prime minister of the French-speaking Caribbean Community (CARICOM) country.Lapin is the third head of government under President Moise since he came to office in February 2017.

Hampi, also referred to as the Group of Monuments at Hampi, is a UNESCO World Heritage Site located in east-central Karnataka, India. Hampi continues to be an important religious centre, housing the Virupaksha Temple, an active Adi Shankara-linked monastery and various monuments belonging to the old city.

A hot air balloon is a lighter thanaircraft consisting of a bag, called an envelopewhich contains heated air. The hot air balloon is the first successful human-carrying flight technology. The first untethered manned hot air balloon flight was performed by Jean-Francois Pilatre de Rozier and Francois Laurent d'Arlandes on November 21, 1783, in Paris, Francein a balloon created by the Montgolfier brothers.

Periyar River is Kerala’s longest river which is known to have the largest discharge potential. The river is the source of drinking water for towns and cities in south India. Kerala’s Periyar River has turned black near the Pathalam Regulator cum Bridge. This discolouration of Periyar and fish kills have been a serious issue for last couple of years.

Commensalism is a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter.The commensal—the species that benefits from the association may obtain nutrients, shelter, support, or locomotion from the host species, which is unaffected.