There are not many children quite like Tanishq and Tiara Abraham.
At four years old, the Sacramento, Calif. siblings made history when they were inducted into Mensa, the largest and oldest high IQ society in the world.
Tanishq, now nine years old, started taking college courses at seven, has already discovered a supernova, helped to discover an exoplanet, and recently became the youngest member of Phi Theta Kappa Honor Society.
He will likely have his undergraduate degree by the age of 11.
The young genius is interested in science, but isn't ready to limit himself to one field. He's got a couple of goals in mind.
One goal, he said in a recent interview, is to get a Ph.D. as soon as possible so he can start his research. "I want to make discoveries, like some major discoveries, and research is one way I can make those discoveries," he said.
He's also thinking of double majoring in general science and history or political science. He wants to have these degrees in his back pocket so maybe one day he can become the president of the United States.
"I want to help the United States," he said. "They have some problems, and I want to help fix those problems."
Some of the issues he wants to address include climate change, gun control, and education. However, Tanishq said, "there are so many problems that need to be fixed that I can't list them all."
His sister, who is now seven, also has a couple of goals. When she's older, she hopes to be "a veterinarian, a famous artist, a famous singer, and a famous sprinter."
Despite being geniuses, the siblings are still little kids. And bridging the gap between their age and intellect hasn't always been easy.
When Tanishq and Tiara went to kindergarten, both were way ahead of their peers. They skipped a grade, but were still bored in second grade. Eventually, their parents decided it was best to homeschool them and supplement Tanishq's schooling with higher education courses. Tiara will likely follow in her brother's footsteps.
The siblings are social, their mother said, and to make sure they have time with kids their age, they take part in plenty of extracurricular activities. They both take tennis and swimming lessons and Tanishq is in a boys choir.
"He'll go to his choir class and goof around with all those boys," his mother, Dr. Taji Abraham, said, "and when he goes to college he's more serious. He jokes around with them too, but it's a different environment."
Despite the family's focus on trying to give their kids the best of both worlds, they still get a lot of criticism. Their mother said they often hear, "Why do you have a seven year old in college? You're taking away his childhood."
The kids, Dr. Abraham said, are actually very well adjusted. She and her husband, Bijou Abraham, make sure of that. With all their talent, their mother said, there is no way "we could sit idly by."