BALTIMORE (WJZ) — Michael Bloomberg has made a monumental donation to the Johns Hopkins School of Public Health. It targets five major health issues our country faces.

One of the top ten wealthiest men in America, former New York City mayor Michael Bloomberg is once again pledging his commitment to research and education, making a $300 million donation to the Johns Hopkins School of Public Health that bears his name.

It’s a fraction of the $1.5 billion Bloomberg has donated since he graduated 52 years ago.

“Donations like this are the lifeblood of our school,” said Michael Klag, dean of the Johns Hopkins Bloomberg School of Public Health.

This gift will beef up man power at Hopkins on five issues Bloomberg believes impact quality of life: drug addiction, environmental threats, adolescent health, obesity and gun violence in America.

They are issues Reverend Dr. Andre Humphrey knows well, working with Baltimore kids in the Trauma Response Team.

“The communities that they live in, it’s just a battle zone. So the more it goes untreated, the police department can’t do it all,” Dr. Humphrey said.

The successful businessman has not forgotten his roots, funding major projects like the Charlotte Bloomberg Children Center, and serving on the university’s Board of Trustees for six years.

“This gift will allow us to take things that we already do and ramp it up to a whole new level to have a much greater impact. It’s also going to let us develop a new, innovative model to improve the health of communities,” said Klag.

The donation coincides with the 100-year anniversary of the founding of the school. Bloomberg said on his website it’s an honor to launch the next 100 with this gift.

One-third of Bloomberg’s gift will be dedicated to scholarships for public health students.