Today: Obama Goes All In.

I'm Davan Maharaj, editor of the Los Angeles Times. With sweeping rules for coal plant emissions, Obama goes all in on his big "legacy" issues; and the story of medical sleuths who ran down a killer on the loose. Here are some story lines I don't want you to miss today.

TOP STORIES

Obama Goes All In

Healthcare, same-sex marriage, immigration and now climate change. With the release today of landmark rules to fight global warming, President Obama is all in on his so-called legacy issues. He won't need an OK from Congress for his strategy (Republicans call it a "war on coal"), but court fights are guaranteed. Perhaps more important: It'll help shape the race to succeed him.

The Death of Truth

Journalists seeking refuge from death threats by drug gangs had thought Mexico City to be something of a haven. No more. Ruben Espinoza was killed after fleeing there -- the 12th journalist who worked in the state of Veracruz to be killed since 2011. "Killing journalists won't kill the truth," read a banner at his memorial. Unfortunately, in parts of Mexico, it already has.

Bailout Blues

Germany's finance minister has doubts. So does the International Monetary Fund. Even Greece's prime minister says he doesn't really believe in the massive financial bailout he seeks. So why do these key players still pursue it? It seems to be more politics than economics: fears of what a Greek crash out of the euro currency group of nations might do to the notion of European unity.

Killer on the Loose

Patients at UCLA were becoming deathly ill. A superbug was spreading. Could doctors figure out how and stop it? Here's a riveting medical whodunit about a killer on the loose and medical sleuths who traced it to a specialized scope that was difficult to sanitize. Also, an examination of a federal database shows it's not the only type of scope that has put patients at risk. 

"DWP Mugged Our Dog"

Dogs and meter readers are never a good mix. Now we have Ralph and his Pacific Palisades owner versus the L.A. Department of Water and Power. Steve Markoff is miffed that a meter reader bloodied Ralph's nose with a wrench. He demands damages for "pain and suffering," and a policy change. He tells his story at dwpmuggedourdog.com. Our version is today's Great Read.

CALIFORNIA

-- A Northern California wildfire explodes in size; two dozen homes are lost and thousands are threatened. (With photo gallery).

-- Deaths of two women, apparently of overdoses, at a music festival in Pomona rekindle debate about whether enough is done to prevent fatalities at raves. 

-- Inglewood goes after a self-styled watchdog who posts videos, under the name "Dehol Truth," that have angered city leaders. Good luck, legal analysts say. 

NATION-WORLD

-- How do you debate Donald Trump? Or should you even try? 

-- Drought could wipe out more than 80% of the sockeye salmon run in Washington's Columbia Basin.

-- Cracks emerge in the ranks of the Taliban in Afghanistan after a new leader is named.

-- A 16-year-old girl dies of wounds she suffered in Jerusalem's gay pride parade.

BUSINESS

-- The California Public Employees Retirement System will disclose what it pays Wall Street for private equity investing. Expect sticker shock.

-- Here are 10 up-and-coming L.A. innovators to keep an eye out for.

SPORTS

-- Triple Crown winner American Pharoah romps to an easy win in the Haskell Invitational.

-- Hiroto Ohhara and Johanne Defay win U.S. Open surfing titles at Huntington Beach.

-- After her dominating UFC 190 win, Ronda Rousey says she wants to fight Miesha Tate next.

-- Inbee Park wins the British Women's Open, capturing her fourth different golf major.

-- The latest scores, stats and schedules.

ENTERTAINMENT

-- Weekend box office: "Mission: Impossible - Rogue Nation" emerges on top with $56 million.

-- The "Downton Abbey" cast reflects on final moments and talks about movie prospects.

WHAT OUR EDITORS ARE READING

-- Climate change: The Economist ponders the economics of "the end of the world as we know it."

-- Smithsonian.com tours the world's first nuclear power plant, in Idaho.

-- Grantland: Boston simply didn't want its pocket picked by the International Olympic Committee.

ONLY IN L.A.

It's just another nondescript L.A. intersection -- Temple Street and Glendale Boulevard -- home to a gas station, a do-it-yourself car wash, a collision center and public tennis courts. Leave it to columnist Steve Lopez to get out of his car and unearth a quintessential L.A. experience, especially after Leo's taco truck pulls up and the nighthawks come out.  

Please send comments and ideas to Davan Maharaj.