• 인류최초의 발견─불의 사용

    과학동아 1989년 03호

    was the use of fire, but we have never known exactly how long ago this discovery was made. But now, two South African archeologists have reported evidence that the discovery may have come about much longer ago than had been thought.Note that this is not a matter of the discovery of fire itself. Fire was a common event once forests came into existence about 400 million years ago. They did burn ...

  • 인간과 동물의 기록비교

    인간과 동물의 기록비교

    과학동아 1988년 10호

    deer)의 기록은 7.5m. 또 북미산 토끼(Jack rabbit)는 6.9m, 개구리는 5.35m, 아프리카산 뛰는 쥐(african jerboa)는 4.5m, 동남 아시아산 안경 원숭이(tarsier)는 3m정도를 뛸 수 있다.기네스북에 의하면 유대류의 넓이뛰기 신기록은 붉은 캥거루 암컷에 의해 세워졌다고 한다. 숫컷을 쫓아갈 때 한번에 12.2m를 뛴 것이다 ...

  • 옛 괴물들

    과학동아 1988년 02호

    that was up to nine feet tall and might have weighed close to 1,000 pounds. The largest land mammal now alive is the African elephant, which stands nearly 11 feet tall the shoulder and can weigh up to six tons. However, about 20 to 40 million years ago, there lived a giant rhinoceros(without nose horns), the Baluchitherium ("beast from Baluchistan"), which stood nearly 19 feet tall at the ...