Director Francis Lawrence stated that because some of the visual effects sequences in this film are so challenging, he and the editors began work on them before part 1 of the Mockingjay adaptation was even released.
When he was arrested in 2011, James 'Whitey' Bulger had been on the FBI Ten Most Wanted Fugitives list for 12 years. The $2 million reward the FBI offered for information leading to his capture was larger than that for any other fugitive on the list except Osama bin Laden.
The atmospheric pressure on the Martian surface averages 0.087 psi, about 0.6% of Earth's mean sea level pressure of 14.69 psi. It is so low that a "Fierce storm" as they put it would be something akin to a very light breeze messing up your hair. Due to the low air density sound would not travel like it does on Earth and you would have to stand next to someone and scream for them to hear you, providing you could survive the freezing cold temperature, poisonous atmosphere and lack of pressure.
The casting of the Caucasian actress Rooney Mara as the Native American character of Tiger Lily led to an online petition that urged Warner Bros to stop casting Caucasian actors to play people of color. The casting was accused of whitewashing and the petition originally hoped for 5000 signatures. However, more than 20,000 signatures have supported the accusation.