Over the years, scientific advancements have brought both benefits and disadvantages to society. Which of the following is an area which has been both positively and negatively affected by scientific advancements?
a. food safety
b. waste production
c. climate
d. all of the above

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11