Puerto Rico: The Exodus After Hurricane Maria

Burmese Python Invasion: Fighting Invasive Species

Across America, waves of foreign invaders are taking over. Introduced through human error or carelessness, invasive species like the Burmese python, lionfish and Asian carp have thrived at the expense of native species critical to a delicate natural balance that supports ecosystems and livelihoods. CBS Reports explores whether it's too late to tip the balance back in our favor.