Rafael Nadal, the Spanish tennis player, defeated Dominic Thiem in the final to claim the 2018 French Open men's singles title. This victory marked Nadal's 11th French Open title, showcasing his dominance on the clay courts of Roland Garros.

1. World Environment Day is celebrated every year on 5 June.

2. Its objective is to make mankind aware of the environment.

3. First held in 1973, it has been a platform to raise awareness on environmental issues such as marine pollution, overpopulation, global warming, sustainable development and wildlife crime. World Environment Day is a global platform for public outreach, with participation from over 143 countries annually.

As per the Census of India 2011, Haryana had the lowest sex ratio among all the Indian states. The sex ratio is defined as the number of females per 1,000 males. Haryana's sex ratio was reported to be lower than the national average at that time. Efforts have been made to address gender imbalances and improve the sex ratio in various regions of the country through awareness campaigns and policy measures.

The Kalinga Prize is an international award given by UNESCO (United Nations Educational, Scientific and Cultural Organization) for outstanding contributions to the popularization of science. It is awarded to individuals who have effectively communicated and popularized science to the public, promoting a better understanding of scientific issues and fostering scientific literacy. The award is named after the ancient Indian kingdom of Kalinga, which is present-day Odisha in India.