- Script
- John Broome
- Pencils
- Carmine Infantino
- Inks
- Bernard Sachs
- Colors
- ?
- Letters
- ?
- Job Number
- S-730
- Genre
- science fiction
- Characters
- Susy; Dr. Stanton Walker; Jim
- Synopsis
- Aliens use a weapon that causes the atmosphere of Earth to become super-dense, like their homeworld. Dr. Walker and his assistant Jim find a way to counter the effect.
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- Joe Millard
- Pencils
- Murphy Anderson
- Inks
- Murphy Anderson
- Colors
- ?
- Letters
- ?
- Job Number
- S-731
- Genre
- science fiction
- Characters
- Willy Elkins; Warden Hawes; Jarn of Mars
- Synopsis
- Willy Elkins promises to escape from a prison planetoid in 30 days.
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- ?
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- ?
- Job Number
- S-737
- First Line of Dialogue or Text
- It takes 25,000 pounds of water...
- Genre
- non-fiction; math & science
- Synopsis
- Information on the amount of water needed to grow a pound of cotton.
- Reprints
- Script
- Gardner Fox
- Pencils
- Mike Sekowsky
- Inks
- Bernard Sachs
- Colors
- ?
- Letters
- ?
- Job Number
- S-732
- Genre
- science fiction
- Characters
- Jeff Carter; Horvan Kol; Kook (monkey); Roban
- Synopsis
- While experimenting on a ray to prevent the common cold, Jeff Carter accidentally causes himself to emit radiation that causes all vegetation to grow wildly out of control.
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- Gardner Fox
- Pencils
- Carmine Infantino
- Inks
- Carmine Infantino
- Colors
- ?
- Letters
- ?
- Job Number
- S-734
- Genre
- science fiction
- Characters
- Crandall; Ralfe Gordon; Jackson; Brand
- Synopsis
- Ralfe Gordon warns other space travelers that going faster than the speed of light is dangerous.
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- ?
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- ?
- Job Number
- S-738
- First Line of Dialogue or Text
- Although not apparent to the naked eye...
- Genre
- non-fiction; math & science
- Synopsis
- Information about double-stars.
- Reprints
- Script
- John Broome
- Pencils
- Sid Greene
- Inks
- Sid Greene
- Colors
- ?
- Letters
- ?
- Job Number
- S-733
- Genre
- science fiction
- Characters
- Ral Grayson; Borg
- Synopsis
- Ral Grayson is a mutant with the ability to understand things quickly by just seeing a portion of the process. He uses his ability to figure out the one weakness of the Borg who have taken over Earth.
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- Julius Schwartz (credited as JS)
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- typeset
- Job Number
- S-741
Letters of comment from readers Mark Colella, Bernard G. Williams, Matthew Grahan and Gregory Kent, with replies from Schwartz.
- Script
- Otto Binder
- Pencils
- Manny Stallman
- Inks
- John Giunta
- Colors
- ?
- Letters
- ?
- Job Number
- S-735
- Genre
- science fiction
- Characters
- Brad Stanton; Jerome Baxter; Jim Kirby
- Synopsis
- Brad Stanton and Jim Kirby answer an ad for space-miners promising to pay them $1000 a day. When they sign on they learn that one day on this asteroid is 24,000 hours long.
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- ?
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- ?
- Job Number
- S-739
- First Line of Dialogue or Text
- Amalthea -- Closest of Jupiter's satellites...
- Genre
- non-fiction; math & science
- Synopsis
- Facts about Jupiter's moon Amalthea and how it is slowly spiraling into Jupiter.
- Reprints
- Script
- Gardner Fox
- Pencils
- Sid Greene
- Inks
- Sid Greene
- Colors
- ?
- Letters
- ?
- Job Number
- S-736
- Genre
- science fiction
- Characters
- Evan Wright; Jon Drew
- Synopsis
- Evan Wright can answer any question who's answer is in a book he has read, but can he answer a question about something he has never read before?
- Reprints
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
- Script
- ?
- Pencils
- ?
- Inks
- ?
- Colors
- ?
- Letters
- ?
- Job Number
- S-740
- First Line of Dialogue or Text
- The elevation above which mountains are covered with perpetual snow...
- Genre
- non-fiction; math & science
- Synopsis
- Information about the snow line on mountains and how it varies in altitude from the equator to the poles.
- Reprints