Polecamy Artykuły Nowości
Co niedźwiedzie polarne robią zimą…
Czym niedźwiedzie grzeją w zimowych legowiskach? Dlaczego nie biegają, żeby się rozgrzać? Dlaczego nie marzną im łapy?
Mozaika Bayera, czyli jak zrobić…
Nie jest ważne, czy twoja cyfrówka ma 3 czy 12 megapikseli. Gdyby nie pewien wynalazek wszystkie współczesne aparaty robiłyby szare zdjęcia.
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inter-ideograph"><span style="mso-fareast-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman"">Rycina przedstawiająca pokrzywę
zwyczajną </span><a href="http://pl.wikipedia.org/wiki/Plik:Illustration_Urtica_dioica0_clean.jpg"><span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">http://pl.wikipedia.org/wiki/Plik:Illustration_Urtica_dioica0_clean.jpg</span></a><span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">
(rycina pochodzi z książki </span>Prof. Dr. Otto Wilhelm Thomé <i>Flora von
Deutschland, Österreich und der Schweiz</i> 1885, Gera, Germany)<span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman""></span></p>
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Zapomniane oblicze pokrzywy
Pokrzywa zwyczajna (Urtica dioica L.) to jedna z tych roślin, którą poznajemy już we wczesnym wieku i to najczęściej od tej nieprzyjemniej strony. Swędzenie, zaczerwienienie, wysypka to częste efekty spotkania z pokrzywą.
Sahara to nie tylko piasek…
Słysząc słowo Sahara, najczęściej wyobrażamy sobie bezkresne powierzchnie pokryte żółtym piaskiem. Czy to prawdziwy obraz? Niezupełnie.
Gdy ziemia się trzęsie…
Co wywołuje trzęsienia ziemi w Polsce? Po co je badać? Co to jest IS-EPOS? Jak to jest, gdy trzęsie się dom lub „coś” stuka w szafkach? Na te pytania odpowiada dr Grzegorz Lizurek, sejsmolog z Instytutu Geofizyki PAN.