7 things to know now: Zika through sexual contact; National Signing Day; Kerry emails

Here's a roundup of news trending across the nation and world today.

What to know now:

1. Kerry's emails: The State Department announced Tuesday that in 2011, John Kerry sent an email which has since been labeled classified to then-Secretary of State Hillary Clinton via a private email account. Kerry, who was a senator at the time, sent the email to Clinton through a "non-official account," a State Department spokesman said. A part of the email that mentioned what was happening in India, Pakistan and Afghanistan was classified as "secret" last week in advance of the State Department's release of a batch of Clinton's emails.

2. Zika virus transmission: The Centers for Disease Control and Prevention say there has been a case of the Zika virus transmitted through sexual contact and not by a mosquito bite. According to the CDC, a person in Dallas is believed to have contracted the disease through sexual contact with a person who had recently traveled to Venezuela. The disease has been linked to birth defects in babies throughout South America. The disease has been declared a global public health emergency.

3. Flint hearings: A congressional hearing will be held Wednesday to try to find out what took so long to address the drinking water crisis in Flint, Mich. Flint's former city manager Darnell Earley, was subpoenaed to testify about how the crisis developed, but has chosen not to attend the hearing. Two former Environmental Protection Administration employees are scheduled to testify. The city's water became contaminated with lead after officials switched its source of tap water from Lake Huron to the Flint River. Despite complaints from residents, the situation went unresolved for more than a year.

4. Women and the draft: U.S. Marine Corps and Army generals said on Tuesday that since women will be integrated into combat positions in the armed forces, that they should now be required to register for the draft. According to testimony before  the Armed Services Committee from Army Gen. Mark Milley and Marine Gen. Robert Neller, it will take up to three years to fully integrate women into all combat jobs. Both  Milley and Neller said women should be required to register for the draft as there will be no lowering of standards to allow women in combat units.

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5. Yahoo layoffs: Yahoo has announced it will lay off 1,500 employees around the world and close offices in five countries in an effort to cut some $400 million from its budget. The company has struggled in recent years with declining revenue. Yahoo CEO Marissa Mayer is expected to announce the layoffs as she discusses  the company's fourth-quarter earnings Wednesday.

And one more

It’s National Signing Day on the college football calendar, the day when high school seniors will sign Letters of Intent to play football at colleges across the country. By the end of the day, the top recruiting classes will be known, and speculation on who will end up in this year’s national championship game can commence. As if it ever stopped…

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