CNBC's Jim Cramer attributed late-Tuesday's market sell-off to China tariffs worries combined with an overbought market. The "Mad Money" host sat down with Medtronic's outgoing CEO Omar Ishrak to get an update on robotic-assisted surgery systems. Later in the show, he broke down what climate change will impact investing on Wall Street.

Investors got spooked and Wall Street coughed up its gains after word spread that import tariffs could stay in place after a U.S.-China trade agreement is signed Wednesday, CNBC's said Tuesday.

The rose almost 150 points to its early afternoon highs before closing the session up roughly 32 points. The and both reached new heights during the trading day before finishing down about 0.20%.

"If today's afternoon pullback turns into a full-blown decline later this week, you need to remember that a sell-off would be a terrible thing to waste," the "Mad Money" host said. "So many companies [are] doing so well. I'd love to buy them, but at this point only on weakness."

's acquisition of Israeli robotic surgical equipment maker Mazor Robotics is in the early innings of success, CEO Omar Ishrak told CNBC.

"It's only beginning to pay off," he said in a sit-down with Cramer at the J.P. Morgan Healthcare Conference in San Francisco. "We're delighted with the results that we're seeing and our spine business this last year — ever since I've been here — has had its strongest year, and the robot has played a big role in that."

Chairman and CEO 's decision to call out the warnings of climate change in his annual letter has changed Wall Street forever, Cramer said.

"From now on, a company that can't prove it regards the Earth as a stakeholder is liable to get a lower-price-to-earnings multiple, because serious investors now are going to pay up for sustainability," Cramer argued. "That's a very big deal."

In Cramer's lightning round, the "Mad Money" host ran through his thoughts about callers' favorite stock picks of the day.

: "It needs more car turnover. I'm going to stay bullish on it. We've liked it for a triple."

: "You know I think this is a great situation, however I still prefer to be a little more diversified and like , which is buying , because, well, you want Botox. I think that's the way to play it."

: "Dollar General has negotiated and navigated these tariffs, and they've done a fantastic job, better than . It's a winner."