Polecamy Artykuły Nowości
Czerwony liść kontra mszyca
Dlaczego w czasie jesieni liście drzew zmieniają kolor? Czemu stają się żółte, przybierając jednocześnie czerwone rumieńce? Czy te atrakcyjne dla naszych oczu przebarwienia mają jakieś znaczenie dla rośliny? Nad tym pozornie zwyczajnym zjawiskiem…
Trójmorski Wierch – jedyna góra w…
Trójmorski Wierch to góra, z której w kierunku południowo-zachodnim wody płyną do Morza Północnego, w kierunku południowo-wschodnim – do Morza Czarnego, a w północnym – do Morza Bałtyckiego. Jak to możliwe?
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Niagara – widoczne dwie części: American i Canadian Falls. </span><span style="font-size:11.0pt;line-height:115%;font-family:"Calibri","sans-serif";
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EN-US;mso-bidi-language:AR-SA" lang="EN-US">Fot. Safron Blase, źródło: <a href="http://commons.wikimedia.org/wiki/Niagara_Falls#mediaviewer/File:Niagara_Falls_Storm.jpg">http://commons.wikimedia.org/wiki/Niagara_Falls#mediaviewer/File:Niagara_Falls_Storm.jpg</a></span><!--[if gte mso 9]><xml>
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Wodny spektakl
Czy jest wśród Was ktoś, kto nie słyszał o wodospadzie Niagara? Wodospad ten znajduje się na granicy Kanady i Stanów Zjednoczonych. Nie jest największy na świecie, nie niesie najwięcej wody. W czym tkwi jego magia?
Zmieraczki – czyściciele plaż
Skaczące ziarenka piasku na plaży – czy ktoś z Was je widział? Przeczytajcie, czym są.
Rzeki lekami płynące
Czy przełknięta przez kogoś tabletka lekarstwa może trafić do rzeki, a stamtąd do twojej szklanki z wodą? Czy po drodze lek uleczy rybkę, czy raczej jej zaszkodzi? To ostatnio coraz gorętszy temat nie tylko w świecie nauki.