Shows like CSI and Dexter have increased the popularity of and the interest in forensic science careers. Coupled with scientific and technological advancements in the field make these sorts of careers more and more appealing, and thus more competitive. To become a forensic scientist, you'll want to focus on learning about science. In college, study the natural sciences, and hone your expertise if you are interested in a particular specialization. Try to find internships at forensics labs, apprentice under other scientists, and develop strong written and oral communication skills. You can also expect to have to pass a background check.