Ukrainian drones targeted St. Petersburg on Sunday, Russian authorities said, forcing the airport to close for five hours as Vladimir Putin marked Russia's Navy Day in the city, despite the earlier cancellation of its naval parade due to security concerns.St. Petersburg usually holds a large-scale, televised navy parade on Navy Day
Ship traffic in shallow areas, such as ports, can trigger large methane emissions by just moving through the water. The researchers in a study, led by Chalmers University of Technology in Sweden, observed 20 times higher methane emissions in the shipping lane compared to nearby undisturbed areas.