They’re known as “living fossils”. For over 450 million years, horseshoe crabs have been an ecologically vital part of our planet. They’re one of the few surviving species on Earth dating back to the dinosaurs. At NASA’s Kennedy Space Center in Florida, the American horseshoe crab (Limulus polyphemus) is one of more than 1,500 types […]
Posted on
April 22, 2025
Sign up for our newsletter:
Categories
10
1
1
103
17
103
102
10
14
134
10
13
1
2
89
39
4
6
149
1
3
2
2
1
32
4
18
2
198
11
2
4
6
29
6
3
11
14
2
5
43
1
43
10
42
1
1
1
2
10
2
40
6
1
6
1
3
11
3
28
33
108
1
1
1
3
3
2
2
14
12
1
65
2
5
1
134
1
13
10
14
1
6
11
10
3
1
2
32
1
263
346
1
10
54
1
32
171
356
291
107
121
11
1
1
1
1
157
10
4
20
221
3
8
1
1
1
1
1
10
59
26
4
20
1
1
52
625
10
3
2
23
2
1
4
212
1
17
29
3
24
1
18
10
1
1
10
1
346
1
1
25
4
12
18
1
18
37
15
149
41
196
384
6
1
6
2
4
370
5
15
1
6
37
1
8
51
17
44
25
3
1
2
17
1