Meghan Markle and husband Prince Harry became parents for the first time this year. The couple greeted little Archie Harrison on May 6 and still enjoys a good time with the young boy. Little Archie was born just over a year after the marriage of Duke and Duchess of Sussex in a lavish ceremony at St. George's Chapel in Windsor.

Archie may not be an only child for long, as his parents are reportedly interested in having a second baby in the family.

That does not mean that Meghan is going to get pregnant soon.

According to a royal insider, the Duke and Duchess of Sussex will not be afraid to be adopted.

Palace sources told RadarOnline.com that the couple could take another unconventional step and adopt a baby.

READ MORE: Prince Harry and Meghan Markle as "the most unpopular royal couple"

The insider said, "Harry and Meghan will get a lot of resistance from the old guard, but they are persistent!"

Royal Punters are also very interested in the couple adopting their second child.

According to the bookmakers of Ladbrokes, the likelihood of the royal couple adopting a second child is 5/1.

Ladbrokes's Jessica O'Reilly said, "Royal fans would like to see Harry and Meghan broaden their brood, and adoption would be a wonderful way to do that."

If Meghan and Harry decide to adopt, Meghan may never get pregnant again.

Prince Harry revealed that he wants two [children]"maximum" to protect an overpopulated planet.

This resulted in an interview with Dr. Ing. Jane Goodall, featured in Meghan's guest-issued British Vogue September issue.

Dr. Goodall and the Duke of Sussex talked about the reduction of natural resources when they pointed out how "terrifying" the environmental threat is if you are a parent.

Dr. Goodall said to Harry, "It's scary. Especially since you just got a baby. "

Prince Harry replied, "I see it differently now, without question.

"But I always wanted to try to make sure of that even before I had a baby and hoped for children …"

The Duke of Sussex was Goodall disturbed, saying, "Not too many!", To which Harry replied, "Two maximum!"

He continued, "But I always thought, this place is on loan.

"And if we are as intelligent as we all are or how we are all evolved, we should be able to leave something better for the next generation."

Harry's comments were branded "preaching" by a royal author.

Royal expert Richard Fitzwilliams said, "All we know is that Harry Jane Goodall has controversially said that they would have a maximum of two children to save the overpopulated planet. That was something preaching. "