Science of Valentine's Past

Ah, Valentine's Day. It's an excellent reason to give/enjoy fine chocolates and wonderful gifts. But it's certainly not a day to ignore science. Inside Science has traditionally paid attention to matters dear to the heart on this special occasion, such as diamonds, chocolate and flowers. Here are two current stories that strike related chords:

Technology to Make Donated Hearts May Beat Much Longer

Space Diamonds Reveal Supernova Origins

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Diamonds:

• In the Quantum World, Diamonds Can Communicate With Each Other 
• Telling the Tale of an Epic Journey

Gifts:

• Cost has little impact on how much we value the gifts we receive

Flowers:

• Growing "Green" Flowers

Chocolate:

• Unwrapping its Genome