- 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: show reprint note before migration
Cover story. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- 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: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- Script:
- ?
- Pencils:
- ?
- Inks:
- ?
- Colors:
- ?
- Letters:
- ?
- Job Number:
- S-737
- Genre:
- fact
- 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: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- 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: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- Script:
- ?
- Pencils:
- ?
- Inks:
- ?
- Colors:
- ?
- Letters:
- ?
- Job Number:
- S-738
- Genre:
- fact
- 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: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- Script:
- Julius Schwartz [as JS]
- 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: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- Script:
- ?
- Pencils:
- ?
- Inks:
- ?
- Colors:
- ?
- Letters:
- ?
- Job Number:
- S-739
- Genre:
- fact
- 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: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- Script:
- ?
- Pencils:
- ?
- Inks:
- ?
- Colors:
- ? (painting)
- Letters:
- ?
- Job Number:
- S-740
- Genre:
- fact
- Synopsis:
- Information about the snow line on mountains and how it varies in altitude from the equator to the poles.
- Reprints: