A haiku for each element on the periodic table

I'm a huge fan of Mary Soon Lee's Elemental haiku on the website of Science Magazine. When you mouse over an element, you see a haiku that give you three lines' worth of information on that element's role in the world.

The poem for Na refers to the ion's role in the human nervous system:

Racing to trigger

every kiss, every kind act

behind every thought.

Poem for Boron:

Just doing your job

holding plant cells together

no fireworks, no fuss

Poem for Lithium:

Lighter than water

Empower my phone, my car

Banish depression

Poem for Chlorine:

Low road or high road?
World War I. Gas in trenches.

Or salt shared, tears shed.