- The First WHO Global Conference on Air Pollution and Health took place at WHO headquarters in Geneva, Switzerland. The conference was organized in collaboration with UN Environment, the World Meteorological Organization (WMO), the Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants (CCAC), the UN Economic Commission for Europe (UNECE), the World Bank and the Secretariat of the UN Framework Convention on Climate Change (UNFCCC).
- NASA's "supersonic parachute" that will have a major role in landing its Mars 2020 rover has created a world record by deploying in just four-tenths of a second and surviving 37,000 kg load. Following the launch of a 17.7-metre Black Brant IX sounding rocket, in less than 2 minutes a payload separated and started diving back through Earth's atmosphere. When the payload had reached the appropriate height (38 km) and Mach number 1.8, the payload deployed a parachute. Within four-tenths of a second, the 180-pound parachute fully inflated. It was the fastest inflation in history of a parachute of this size. It created a peak load of nearly 70,000 pounds of force. The 37,000-kilogramme load was the highest ever load survived by a supersonic parachute.
- China hosted the fifth World Buddhist Forum held from 28th to 30th October 2018. It was held in the Chinese city of Putian. More than 1,000 participants from 55 countries and regions participated.
- China launches new high-orbit satellite to boost its BeiDou global satellite navigation system. This is the first BeiDou-3 satellite in high orbit, nearly 36,000 km above the Earth. It will follow the Earth's rotation, in a geostationary orbit, and will view the same point on Earth continuously.
- Eight countries are given exemption once U.S. sanctions against Iran. India is one among the 8 countries that will receive a waiver from U.S. sanctions on oil trade with Iran. On May 8, the U.S. President Donald Trump announced that it is pulling out of the Iran nuclear deal. Sanctions imposed prior to nuclear deal are re-triggered. These targets Iran's ability to purchase U.S. dollar notes and trade in metals, besides other currency transactions. From November 4, other sanctions will kick in targeting Iran's oil exports and energy sector. On November 2, Secretary of State Mike Pompeo announced that 8 countries including India, which is the second largest importer of crude oil from Iran, will receive sanction waivers to keep buying oil.