Jeff Bezos promises Amazon will hit carbon neutrality 10 years early

• "We've been in the middle of the herd on this issue, and we want to move to the forefront," Bezos said.

As part of Amazon's plan, Bezos commits to...

• Speaking with CEOs of other major companies to get them to sign the Climate Pledge.
• Adding 100,000 electric delivery vehicles to Amazon's fleet by 2024. The cars will be built by Rivian, an EV startup in which Amazon has invested.
• Regularly measuring and reporting Amazon's emissions.
• Working with Amazon's suppliers and third-party deliverers to get them to cut their carbon emissions.
• Getting to 100% renewable energy in Amazon's facilities and operations by 2030.

The bottom line: "We're going to take a hard look at our own campaign contributions, and if there are any climate deniers in there, we're going to have very carefully at that," Bezos said.

Go deeper: The climate stakes of speedy delivery

• "After nearly a month of stonewalling, it appears clear that the President has chosen the path of defiance, obstruction, and cover-up," the letter reads.

The state of play: Several White House officials have told Axios' Alayna Treene that the administration has no plans of complying with the committees' demands for interviews or documents without a full House vote formally approving an impeachment inquiry.

The big picture: The Trump administration's initial refusal to turn over the whistleblower complaint on the president's interactions with Ukraine is what led House Speaker Nancy Pelosi to finally support a formal impeachment inquiry.

Go deeper: Trump letter dares Pelosi to hold vote on impeachment inquiry

• Johnson asked the Justice Department earlier this week to look into links between Ukraine and Hillary Clinton's 2016 presidential campaign. His letter questioned the narrative that Biden's actions in Ukraine had nothing to do with his son's connection.
• However, it was also discovered that he signed onto a 2016 letter that mirrored Biden's work to reform Ukraine's prosecutor general and judiciary.
• There is no evidence that Biden's reform work in Ukraine was to protect his son's business dealings, as the president and some of his allies allege, or that he committed any form of corruption.

The state of play: Sondland, a Trump political appointee who donated $1 million to the president's inaugural committee, denied that there was a quid pro quo between the Trump administration and Ukraine's government in a series of text messages that former Ukraine special envoy Kurt Volker provided to a group of House committees investigating the Trump-Ukraine matter.

• "I think it’s crazy to withhold security assistance for help with a political campaign," Bill Taylor, the top U.S. diplomat to Ukraine, texted Sondland.
• Sondland texted back: "Bill, I believe you are incorrect about President Trump's intentions. The President has been crystal clear no quid pro quo's of any kind."
• The New York Times reported that Sondland's response came only after he spoke to the president.

Go deeper: House committees release texts from former Ukraine envoy Kurt Volker