These are the headlines you Need2Know:
* **Toronto Shooter Had Tumultuous Mental History:**
The parents of slain shooter Faisal Hussain went public on his history of mental illness, but officials have not yet identified his motives. The 29-year-old shot and killed two and wounded at least a dozen on Sunday. Read the details [here](https://www.cnn.com/2018/07/24/americas/toronto-shooting-investigation/index.html).
* **Umbrellas Up, Northeasterners!:**
A flash-flood warning is in effect after heavy rainfall has flooded several Pennsylvanian towns. In Scranton, certain parts of Hershey park are submerged in water. See the map [here](https://twitter.com/NWS/status/1021536276095426560).
* **Twitter War Forges Ahead:**
Following President Trump’s all-caps [Twitter](https://twitter.com/realDonaldTrump/status/1021234525626609666) threat to Iranian President Hassan Rouhani, the Iranian Foreign Minister Mohammad Javad Zarif fired back on Monday, warning the U.S. to, “BE CAUTIOUS!” Read the full subtweet from Zarif [here](https://twitter.com/JZarif/status/1021471196242735104).
* **North Korea Tunes it Down:**
Just over a month after Trump met with North Korean leader Kim Jong-un in Singapore to discuss denuclearization, the country is dismantling several ballistic missile launch sites. Stay with the story [here](https://www.theguardian.com/world/2018/jul/24/north-korea-satellite-images-show-dismantling-of-missile-test-facilities-report).
Cheddar's Hena Doba with the latest.
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Federal health advisers voted overwhelmingly against an experimental treatment for Lou Gehrig’s disease at a Wednesday meeting prompted by years of patient efforts seeking access to the unproven therapy.
Lawmakers probing the cause of last month’s deadly Maui wildfire did not get many answers during Thursday's congressional hearing on the role the electrical grid played in the disaster.
President Joe Biden announced Wednesday that federal disaster assistance is available for Louisiana, which is working to slow a mass inflow of salt water creeping up the Mississippi River and threatening drinking water supplies in the southern part of the state.
A new law in California will raise the minimum wage for fast food workers to $20 per hour next year, an acknowledgment from the state's Democratic leaders that most of the often overlooked workforce are the primary earners for their low-income households.
From Sunday, workers at the main United States base in Antarctica will no longer be able to walk into a bar and order a beer, after the U.S. federal agency that oversees the research program decided to stop serving alcohol.
House Republicans launched a formal impeachment hearing Thursday against President Joe Biden, promising to “provide accountability” as they probe the family finances and business dealings of his son Hunter and make their case to the public, colleagues and a skeptical Senate.
The FBI and other government agencies should be required to get court approval before reviewing the communications of U.S. citizens collected through a secretive foreign surveillance program, a sharply divided privacy oversight board recommended on Thursday.
