Asteroid YR4 2024 is a near-Earth asteroid discovered in December 2024. It is an Apollo-type asteroid, which means it orbits the sun in an elliptical orbit that intersects the Earth's orbit. It made news earlier this year when the probability of YR4 hitting the Earth was raised to 3.1% in February 2025, warranting nations to take note.
An IIT Bombay study using satellite data shows rising greenhouse gas levels over Delhi and Mumbai and also identifies emission hotspots in these cities.