Elizabeth Kolbert, Joan Lluís Riera's La sexta extinción (Una historia nada natural) PDF

By Elizabeth Kolbert, Joan Lluís Riera

Kolbert explora cómo l. a. actividad humana, el consumo de combustibles fósiles, l. a. acidificación de los océanos, l. a. contaminación, l. a. deforestación y las migraciones forzadas amenazan contra formas de vida de todo tipo. Se estima que un tercio de todos los corales que forman arrecifes, un tercio de todos los moluscos de aguas dulces, un tercio de los tiburones y las rayas, un cuarto de todos los mamíferos, un quinto de todos los reptiles y un sexto de todas las aves están cayendo en el olvido», escribe Kolbert. Las pérdidas se están produciendo en todas partes: en el Pacífico Sur y en el Atlántico Norte, en el Ártico y el Sahel, en lagos e islas en l. a. cima de las montañas y en los valles.

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Extra info for La sexta extinción (Una historia nada natural)

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The young shoots or suckers from stumps can be peeled, cleaned of leaves, and eaten raw. The roots have been used to create a yellow dye. indd 21 2/14/12 12:12 PM Angiosperms Queen Anne’s Lace, Daucus carota Dicots, family Apiaceae/Umbelliferae (carrot family) Alternate name(s): Wild carrot Size: To 36” tall Range: Throughout the United States Season: Flowers spring through autumn Habitat: Disturbed areas, fields, roadsides Description: Queen Anne’s lace is an herbaceous, erect, biennial plant that has a thick taproot and a sturdy stem studded with somewhat coarse, short hairs.

This plant propagates by seeds or underground rhizomes, and so often it will form closely spaced groups. Uses: The fruit cluster of staghorn sumac can be used to prepare a refreshing, lemonade-like beverage. Soak the ripened clusters in cold water, strain out the liquid, and add sugar to taste. The young shoots or suckers from stumps can be peeled, cleaned of leaves, and eaten raw. The roots have been used to create a yellow dye. indd 21 2/14/12 12:12 PM Angiosperms Queen Anne’s Lace, Daucus carota Dicots, family Apiaceae/Umbelliferae (carrot family) Alternate name(s): Wild carrot Size: To 36” tall Range: Throughout the United States Season: Flowers spring through autumn Habitat: Disturbed areas, fields, roadsides Description: Queen Anne’s lace is an herbaceous, erect, biennial plant that has a thick taproot and a sturdy stem studded with somewhat coarse, short hairs.

Uses: Comfrey has a history of healing properties. The young, tender leaves are edible cooked as greens or boiled in two changes of water to reduce bitterness. A tea, known to soothe digestive disorders, can be made with the leaves or with dried and powdered roots. A poultice of the roots or leaves is used to reduce swelling and soothe bruises, burns, and muscle pain. indd 40 2/14/12 12:12 PM DICots Wintercress, Barbarea vulgaris Dicots, family Brassicaceae/Cruciferae (mustard family) Size: To 2’ tall Range: Most of the United States except the warmest, southern zones Season: Flowers in the spring Habitat: Disturbed soils with sufficient moisture Description: Wintercress is an herbaceous, annual or two- or threeyear perennial, capable of overwintering even in very cold climates.

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