Yahoo chief Marissa Mayer (Magnus Höij / Flickr Creative Commons)

Senators subpoenaed former Yahoo CEO Marissa Mayer to compel her to testify on the 2013 security breach that affected 3 billion Yahoo users, The Hill first reported. Mayer's team had initially declined to make her available to appear before the Senate Commerce Committee at a hearing on Wednesday, November 8. In response to the subpoena, Mayer told the committee she would appear.

Why it matters: Mayer isn't the only former exec in the Senators' cross-hairs. Also slated to testify is former Equifax CEO Richard Smith, as well as the company's interim CEO Paulino Barros, about its recent data breach affecting approximately 145 million people. Karen Zacharia, deputy general counsel and chief privacy officer for Verizon Communications, which now owns Yahoo, will also testify.

Tune in: You can watch the hearing live Wednesday at 10 am ET here.

Go deeper

Wind and solar power hit record global market shares in first half of 2020

Reproduced from Ember; Chart: Axios Visuals

A steep decline in coal-fired power combined with rising wind and solar output drove the carbon-free sources to record global market share in the first half of 2020, per a new analysis from the environmental think tank Ember.

Why it matters: The report shows how the coronavirus pandemic is speeding the ongoing shakeup of the global power mix — but also how it's occurring too slowly to reach international climate goals.

Trump vows to block stimulus funding for mail-in voting and USPS

President Trump on Thursday told Fox Business' Maria Bartiromo that Democratic demands to fund mail-in voting and the U.S. Postal Service in ongoing coronavirus stimulus negotiations were a non-starter.

Why it matters: Trump directly linked Democrats' desired $3.6 billion for mail-in voting and $25 billion for the USPS to his continued baseless claims that increased mail-in voting will lead to widespread voter fraud.

BodyArmor takes aim at Gatorade's sports drink dominance

Illustration: Eniola Odetunde/Axios

BodyArmor is making noise in the sports drink market, announcing seven new athlete partnerships last week, including Christian McCaffrey, Sabrina Ionescu and Ronald Acuña Jr.

Why it matters: It wants to market itself as a worthy challenger to the throne that Gatorade has occupied for nearly six decades.