Stranded

XKCD 28 August

Three Kinds of Research

XKCD 26 August

Time Traveler Causes of Death

XKCD 23 August

Classical Periodic Table

XKCD 21 August

Storage Tanks

XKCD 19 August

Ferris Wheels

XKCD 16 August

Helium Synthesis

XKCD 14 August

Celestial Event

XKCD 12 August

Meteor Shower PSA

XKCD 9 August