All Stories

Magnetic Hardening

Fencing

Nature Ramblings: Piscine Hitch-Hiker

First Glances at New Books

Front Matter

Black as Coal, Dense as Zinc

The Sun’s New Trans-Neptunian Planet

Astronomers Acclaim New Planet

Science News-Letter | March 22, 1930 — The report from Flagstaff of the discovery of a faint, slow-moving object which can most reasonably be interpreted as a ninth major planet of the solar system again emphasizes man's ability to see beyond his power of vision and to grasp what lies beyond his reach.

The Prediction of the New Planet: A Classic of Science

Maya Stone Road Links Two City Ruins

In Various Science Fields

Nature Ramblings: The Tastes of an Octopus