"The U.S. Senate’s second highest-ranking Republican on Tuesday expressed doubt that Congress will pass legislation to increase infrastructure spending this year, citing time constraints."

"The proposal raised eyebrows around the Washington region: What if the government sold Reagan National and Dulles International airports and used the proceeds to fund other needs?"

"President Trump endorsed a 25-cent gas tax hike to pay for infrastructure at a White House meeting this morning with senior administration officials and members of Congress from both parties, according to two sources with direct knowledge."

"California officials and clean air advocates are increasingly concerned the Trump administration may attempt to unravel a key program to drive down greenhouse gas emissions from automobile fleets while also jeopardizing the ability of California and other states to set pollution standards stronger than federal rules."

"House Democrats on Thursday called for $1 trillion in federal dollars for an infrastructure overhaul, a proposal that comes just days ahead of the announcement of President Trump’s long-awaited infrastructure proposal."

"Governments are slowly advancing efforts to reduce climate and health impacts of soot."

"Governments are poised this week to begin discussing rules to curb black-carbon pollution from ships, after nearly seven years of preparation. The sooty emissions, which are produced by diesel engines, warm the climate and harm human health.

"Bunker fuel may now be leaking from the Iranian oil tanker that sank in the East China Sea last Sunday, China’s State Oceanic Administration (SOA) said, underlining fears for contamination from the world’s worst oil ship disaster in decades."

"Transport Canada has lifted the speed limit in the Gulf of St. Lawrence, five months after the restriction was put in place to prevent further right whale deaths."