This president made a secret deal to take U.S. nukes out of Turkey, helping end the Cuban Missile Crisis
Kennedy
It's something that portends a future event, as in the title of a 1976 horror film
Omen
Quantum physics explains why these negative particles don't lose energy & crash into a positively charged nucleus
Electrons
National Weather Service danger signs of this impending phenomenon include a dark, often greenish sky & a roaring noise
Tornado
This flightless 50-pound bird from Mauritius laid its sole egg on the ground, so extinction? Not much of a surprise
Dodo
Unearthed decades later a 1950 letter indicates happiness by Joseph Stalin that the U.S. was entangled in this war
On road signs this 5-letter word is inside a white inverted triangle inside a red inverted triangle
Yield
During an 1858 brawl on the House floor, one representative accidentally grabbed this off the head of another, revealing him to be bald
Toupee/wig
Waves can create a current moving away from the shore, properly called this type of current & much stronger than an undertow
Riptide
In 2015 researchers inserted this animals' genes related to its cold lifestyle into an Asian elephant, a close relative
Mammoth
In this year the U.S. & others boycotted the Moscow Olympics to protest the Soviet invasion of Afghanistan
1980
A yellow card in soccer & a yellow flag in auto racing indicate this warning to be careful
Caution
The co-writer of this woman's '80s song "Physical" originally had in mind a "macho... rock figure like Rod Stewart" for the hit
DAILY DOUBLE
Olivia Newton-John
You can sleep all night & work all day, but Time magazine listed this outdoor job as the USA's most dangerous
Lumberjack
This alliterative bird seen here could no longer be seen alive after the early 20th century
Passenger pigeon
The Stasi were a secret police force of this country that spied on its citizens & encouraged them to spy on each other
East Germany
In a famous poem, Paul Revere was "ready to ride and spread" this "through every Middlesex village and farm"
The alarm
In physics, atomic nuclei keep it together despite repulsive electrical forces thanks to the force described with this adjective
Strong force
This U.S. government department issues regular travel advisories on the level of danger in countries to which you might journey
The State Department
G'day & good Lord! I wouldn't want to box the giant type of this marsupial, which could be 6 1/2 feet tall & weigh 500 pounds
Kangaroo
Abbreviated M.A.D., this theory deterred the use of nuclear weapons by suggesting there would be no winners
DAILY DOUBLE
Mutually Assured Destruction
This 6-syllable word is a reason for a drug or treatment not to be used, like aspirin for patients with bleeding disorders
A contraindiction
Modern mime has roots in the physical comedy, stock characters & improvisation of this 16th c. Italian theatrical form
Commedia dell'arte
Eating certain fish can be dangerous for pregnant women due to this heavy metal; the FDA calls out king mackerel & swordfish
DAILY DOUBLE
Mercury
It was best not to visit the clan of this 2-word animal of the Pleistocene; check out its reared-up skeleton
Cave bear