From Adobe Acrobat to free online editors and built-in tools, here’s how to merge multiple PDFs into one document.

Regular contributor Adam Estes reveals the fascinating journey taken by the Junkers Ju 88 bomber presently on display at the National Museum of the USAF.

PDF Reader Pro lets you convert PDFs to and from Microsoft Office files like Word, Excel, and PowerPoint, giving you full ...

An airplane, traveling with a constant engine speed, makes a large and perfect circle parallel to the ground. There is no ...

Studying for exams often feels like trying to drink from a firehose — dense PDFs, sprawling lecture slides, and research papers piled high. What if you could turn any document into a focused set of ...

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

Peer reviewers judge the validity and quality of new research. These judgements would ideally be impartial, but some reviewers may give a more favourable review if they are cited in the article ...

Elkader Central won its high school football game Friday night at Lansing Kee, 36-28, a game that was delayed twice by weather and lightning. The Warriors are 4-0, surpassing last season’s win total.