You are given a sentence in Portuguese. Your job is to translate the Portuguese sentence into English.
Example: Os astrónomos acreditam que cada estrela da galáxia tem um planeta, e especulam que até um quinto deles tem um planeta do tipo da Terra que poderá ter vida, mas ainda não vimos nenhum deles.
Example solution: Astronomers now believe that every star in the galaxy has a planet, and they speculate that up to one fifth of them have an Earth-like planet that might be able to harbor life, but we haven't seen any of them.
Example explanation: The Portugese sentence is correctly translated into English, because the meaning is preserved.

Problem: Uma das coisas que temos vindo a fazer é tentar perceber como reprogramar células.

Solution: And one of the things that we've been doing is trying to figure out how to reprogram cells.