Why should we be concerned about climate change?

Because rising temperatures would cause 

Droughts 
Heat waves
More forest fires
Melting Ice caps 
Floods
and more severe storms.

In the past 60 years, vaccines helped eradicate one disease (smallpox) and are close to eradicating another (polio).[1]
Vaccines prevent more than 2.5 million deaths each year.[2]

Scientific studies and reviews continue to show no relationship between vaccines and autism.[3]

New and underutilized vaccines could avert nearly 4 million deaths by 2015.[4]

Vaccines cause “herd immunity,” which means if the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get sick because others are less likely to get sick and spread the disease.[5]