The World Habitat Day is observed every year on the First Monday of October that is 04 October throughout the world.

The World Bank has approved a $150 million loan for funding the 'Chennai City Partnership: Sustainable Urban Services Program' of Tamil Nadu, with the vision of making Chennai into a world-class city that is more green, liveable, and resilient to climate change.

World Animal Day is observed on 4th October every year, this day is also known as World Animal Welfare Day or Animal Lovers Day in the world.

The World Bank has also approved a $40 million loan for a project which aims at improving the quality of health services in Meghalaya and strengthen the state's capacity to handle health emergencies, including the COVID-19 pandemic.

Najla Bouden Romdhane has been appointed as the first-ever female Prime Minister of Tunisia.

The Union Minister for Environment, Forest and Climate Change, Mr Bhupendra Yadav has launched the "Wetlands of India" portal.

The Botanical Survey of India has added 267 new species to the country's flora in its new publication Plant Discovery, 2020.

The Indian Coast Guard Vessel Karnaklata Barua was commissioned at Kolkata.

The 2021 Asian Table Tennis Championship has held in Doha, Qatar.

The Centre has launched a web portal named "Waste to Wealth" on the occasion of Gandhi Jayanti.