Polecamy Artykuły Nowości
Powstanie Księżyca
Obecność Księżyca na naszym niebie jest tak oczywista, że prawie zapominamy, jak gwałtowne i dramatyczne były początki jego istnienia.
Pierwsze kroki ornitologa, cz. 3
Co drugi gatunek ptaka na Ziemi należy do wróblowych. Niektóre ptaki z tego rzędu bez trudu można rozpoznać (jak na przykład posiadaczkę pięknego niebieskiego piórka – prezentowanego na zdjęciu obok), inne są tak podobne do siebie, że nawet…
Sahara to nie tylko piasek…
Słysząc słowo Sahara, najczęściej wyobrażamy sobie bezkresne powierzchnie pokryte żółtym piaskiem. Czy to prawdziwy obraz? Niezupełnie.
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<p class="MsoNormal"><span style="font-size:16.0pt;line-height:115%;mso-bidi-font-weight:
bold">Fragment haczykowatych łusek okrywy koszyczka kwiatowego (popularnie nazywanego
rzepem).</span></p>
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mso-bidi-theme-font:minor-bidi;mso-ansi-language:PL;mso-fareast-language:EN-US;
mso-bidi-language:AR-SA">Fot. Jan Kalabiński</span><!--[if gte mso 9]><xml>
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Łopian, przydrożny chwast, stał się…
Idąc polną drogą, na przykład w czasie wakacji, zwróćcie uwagę na koszyczki kwiatowe łopianu. Dzięki obserwacji przyczepnych rzepów, ludzie wymyślili taśmy, których używa się powszechnie w przemyśle odzieżowym, np. do zapinania kurtek, butó…
Piąty smak
Słodki – cukier, słona – sól, gorzkie – migdały, kwaśna – cytryna, a umami?