Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, and the true sun’s daily path across the sky is higher. The opposite is ...

This article was originally published with the title “ Figures and Facts ” in SA Supplements Vol. 8 No. 202supp (November 1879), ... Scientific American is part of Springer Nature, ...

This article was originally published with the title “ Dust and Sand Figures on Membranes ” in Scientific American Magazine Vol. 68 No. 13 (April 1893), p. 202 doi:10.1038 ...

This article was originally published with the title “ Breath Figures ” in SA Supplements Vol. 34 No. 871supp (September 1892), ... Scientific American is part of Springer Nature, ...

Scientific American Custom Media’s Adam Piore spoke with him about his own intellectual journey and what a middle-aged couch potato might do to remain spry until the minute he drops dead of old age.

This article was originally published with the title “ Striking Figures About Cotton ” in Scientific American Magazine Vol. 43 No. 11 (September 1880), p. 160 doi:10.1038 ...

This article was originally published with the title “ Dust Figures ” in Scientific American Magazine Vol. 42 No. 21 (May 1880), ... Scientific American is part of Springer Nature, ...