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Is climate change responsible for dozens of deaths in western wildfires? A scientist describes several factors that created a tinderbox. Los Angeles is on edge as two deputies are gunned down in their car. And Joe Biden still leads national polls, but he's lost a big edge among groups of Latinos.

The Senate tries (and fails) to pass its own pandemic relief package. President Trump responds to criticism over his admissions about coronavirus and national security. And ABC's "20/20" uncovers new details about the death of Army Spc. Vanessa Guillen.

The Senate tries (and fails) to pass its own pandemic relief package. President Trump responds to criticism over his admissions about coronavirus and national security. And ABC's "20/20" uncovers new details about the death of Army Spc. Vanessa Guillen.

A series of bombshell interviews show President Trump admitting that he misled the American public about the dangers of COVID-19. Wildfires lead to deaths in some parts of the west coast, while others are enveloped in a bizarre red haze. And an ABC News investigation show alarming disparities in how many black motorists are pulled over in traffic stops.

A series of bombshell interviews show President Trump admitting that he misled the American public about the dangers of COVID-19. Wildfires lead to deaths in some parts of the west coast, while others are enveloped in a bizarre red haze. And an ABC News investigation show alarming disparities in how many black motorists are pulled over in traffic stops.

The chief of police in Rochester, NY abruptly resigns amid protests in the city around the death of Daniel Prude. Republicans in the Senate try to move forward with a vote on a second stimulus bill but it does not include payments to Americans and it may not make it very far. And a prominent vaccine trial is put on hold as a behind the scenes debate heats up over who should get the vaccine first in the United States.

The chief of police in Rochester, NY abruptly resigns amid protests in the city around the death of Daniel Prude. Republicans in the Senate try to move forward with a vote on a second stimulus bill but it does not include payments to Americans and it may not make it very far. And a prominent vaccine trial is put on hold as a behind the scenes debate heats up over who should get the vaccine first in the United States.

Days after its publication, President Trump continues to deny a report in The Atlantic magazine that he called American war dead “losers." Public health officials say this past weekend could help determine what the next wave of COVID-19 looks like. And, a first hand account from a reporter on the California fireline of what it’s like to be trapped by flames.

Days after its publication, President Trump continues to deny a report in The Atlantic magazine that he called American war dead “losers." Public health officials say this past weekend could help determine what the next wave of COVID-19 looks like. And, a first hand account from a reporter on the California fireline of what it’s like to be trapped by flames.

In a special edition of Start Here, ABC News business correspondent Deirdre Bolton describes the myriad of ways that the pandemic separated the "haves" and "have-nots." Then Derek Thompson from The Atlantic describes what companies are getting wrong in their response.