Add spaces: But,yousay"Mancan'tchangehumannature."

Answer: But, you say "Man can't change human nature."
Dustcollectorcyclonewithacapacityof6liters

Dust collector cyclone with a capacity of 6 liters
[Q]: [However,HuygenswasnotinParisandthemeetingdidnotmaterialise.]
[A]: [However, Huygens was not in Paris and the meeting did not materialise.]
Problem: Add spaces: Iwouldmakeasimilar,butshorterandmoreaccuratesketchforthe'LinneanJournal.'

Spaces added: I would make a similar, but shorter and more accurate sketch for the 'Linnean Journal.'
This text is missing some spaces, please add them: Whilesomefocusonhuge,technology-ledconsolegames,othersconcentrateonthequickturnaroundoftitlesforhandheldsormobilephones.
While some focus on huge, technology-led console games, others concentrate on the quick turnaround of titles for handhelds or mobile phones.
[Q]: [In1954hereceivedthePresernovanagradaPrizeandwaselectedtotheBavarianAcademyinthesameyear.TheUniversityofLjubljanaawardedhimanhonorarydoctoratein1963ontheoccasionofhis90thbirthday.]
[A]:
[In 1954 he received the Presernova nagrada Prize and was elected to the Bavarian Academy in the same year. The University of Ljubljana awarded him an honorary doctorate in 1963 on the occasion of his 90th birthday.]