What does SPF on sunscreen stand for?
AnswerSun protection factor
SPF rates protection against UVB rays.
Nature · Facts & stats
Protect facts & stats
7 fact-checked facts about protecting people, places and the planet, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does a network firewall do?
AnswerFilters network traffic
Firewalls block unwanted connections.
Going deeper
Which organization publishes the Red List of threatened species?
AnswerIUCN
The International Union for Conservation of Nature maintains the Red List.
The Montreal Protocol protects what?
AnswerThe ozone layer
It phases out ozone-depleting chemicals.
The Great Barrier Reef lies off the coast of which country?
AnswerAustralia
It is protected by the Great Barrier Reef Marine Park.
Expert level
In which year did the US pass the Endangered Species Act?
Answer1973
President Nixon signed it in 1973.
In which year was the Montreal Protocol signed?
Answer1987
It was agreed in September 1987.
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