Letters to the Editor

Readers ponder differences in polio vaccines and more

Readers had questions about polio vaccines and more.

Readers question killer macros and spinning wheels

Readers had questions about theoretical dark matter particles and textile archaeology.

Readers contemplate climate change and neural connections

Readers had questions about neurons and carbon-absorbing algal blooms.

Readers ask about aging perceptions, coral reefs and more

Readers had questions about aging perceptions, coral reefs, praying mantis vision and more.

Readers marvel over moon mementos and more

Readers had questions about items left on the moon during the Apollo missions and more.