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- 일본의 기술과학동아 l199101
- to the deserts, and taken away from the flood plains of India, and of ways in which the climate can be changed for the better.Of course, the chief problem is that all such dreams can so easily ...
- 로봇 곤충들과학동아 l199012
- 88 entitled "Too Bad," I described a miniaturized robot inside a bloodstream that killed cancer cells without harming normal ones.Perhaps we're on the verge of actually seeing these tiny robots ...
- 생명체의 분류과학동아 l199012
- eukaryotes began to develop, and at first only as different kinds of worms. Only 600 million years ago life forms as advanced as shelled sea-life developed, and only 500 million years ag ...
- 금이 없다!과학동아 l199011
- MIT의 지질학자인 켈리 파크너와 존 에드먼드씨의 분석에 의하면 바닷물속의 금 함유량은 예상했던 양의 1천분의 1밖에 되지 않는다고 한다.애석한 일 ... dollars or more of effort, as Fritz Haber found out 60 years ago. So the gold will ways to s ...
- 도도새 같은 죽음과학동아 l199011
- overfed turkeys. (Who knows! If dodos had been saved, we might now have dodo farms and dodo meat that might be superior to that of turkeys.)Instead, Kitchener turned to earlier drawings that s ...
- 발 달린 고래과학동아 l199010
- and are smaller, or absent, in females. It would be interesting, therefore, to find other examples of these fossils in order to examine that possibility.(C)1990, Los Angeles Times ...
- 슈퍼 다이아몬드과학동아 l199010
- ordinarily are, so they probably will not be used on a large scale. However, there are bound to be small-scale uses for which they will be ideal and it is quite possible they will be ess ...
- 보이지 않았던 별과학동아 l199009
- crescent moon was in the sky nearby. Robbins and Westmoreland believe that the star near the rabbit signifies that. Moreover, there are 23 rays emerging from the star and that may repres ...
- 마지막 입자과학동아 l199009
- Rubbia, who was awarded the Nobel prize.Both Fermilab and the CERN atom - smasher in Geneva, Switzerland, searched for the W — particles,and CERN that won that race. Fermilab is anxious to win ...
- 상처를 찾아라과학동아 l199008
- 어디를 때렸을까?1980년 이래로 많은 과학자들은 상당한 크기의 소행성 또는 혜성이 약 6천5백만년 전에 지구와 충돌하여 공룡과 그 밖의 많은 생명체를 멸종케 ... about a general agreement that it was heavenly artillery that destroyed the magnificent dinosaurs.It would ...
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